JP4119030B2 - Ophthalmic imaging equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in an ophthalmologic photographing apparatus for photographing a photographing part such as a fundus oculi, a corneal endothelium, a corneal cross section or the like of a subject eye.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an ophthalmologic photographing apparatus for photographing a photographing part such as a fundus, a corneal endothelium, a corneal cross section, or the like of an eye to be examined is known. In this type of ophthalmologic photographing apparatus, for example, a fundus camera for photographing the fundus, each part to be photographed as a part of the entire fundus is displayed as an observation part (alignment image, fundus image) as a moving image on a monitor screen, Each observation part displayed on this screen is photographed while observing, and each part to be photographed obtained by this photographing is recorded as a still image on a still video recorder or the like, and each stationary part obtained by this photographing is recorded. The images are associated with each other and displayed on the screen as a panoramic image.
[0003]
In this type of ophthalmologic photographing apparatus, when each fundus region is associated and displayed as a still image on the monitor screen, it is troublesome to synthesize and combine the obtained still images. May be erroneously associated, which is a problem when the entire eye to be examined is examined over a wide range.
[0004]
Therefore, a photographing position selecting means for selecting a photographing part to be photographed of the eye to be examined is provided, and when photographing the photographing part and recorded as a still image, a recording means for recording the still image together with the photographing position information is provided. An ophthalmologic photographing apparatus configured to display each still image on a screen as a panoramic image based on the photographing position information has been proposed (see, for example, Japanese Patent Laid-Open No. 9-173298). According to the ophthalmologic photographing apparatus, there is no need to bother the work of associating and pasting the obtained still images together, and there is no possibility of associating each still image by mistake.
[0005]
[Problems to be solved by the invention]
However, in the device disclosed in Japanese Patent Laid-Open No. 9-173298, when observing the eye to be examined, the imaging region that has already been imaged is not displayed on the screen, and an image is to be captured on the screen. Since the imaging part is only displayed as a video, there is a problem that it is difficult to intuitively grasp the correlation with the imaging part that has already been taken while observing the part to be taken. .
[0006]
Further, in such an ophthalmologic photographing apparatus, even if the doctor correctly instructs the next photographing part to the directed photographer such as a nurse, the directed photographer sometimes operates in the right and left direction incorrectly. It is done. This is because the left-right direction of the patient and the left-right direction on the monitor screen are reversed.
[0007]
Normally, when a doctor takes a picture as a photographer, the doctor always gives consideration to “reversing the right and left direction” from the patient's standpoint, and changes the shooting direction to “right” on the monitor screen. If you want to change the direction of the fixation target, give the patient consideration to the reversal of the left and right direction and tell them to change the presentation direction of the fixation target to the left. The photographing direction instruction means is operated to switch the photographing direction of the ophthalmic photographing apparatus to “left direction”.
[0008]
On the other hand, when a doctor directs an instruction to the subject instructor (a nurse or a full-time photographer) as an instructor through a subject such as a nurse, Similarly, if you want to take a picture of the patient from the patient's standpoint, taking into account the reversal of the right / left direction and changing to the “right direction” on the monitor screen, take care of the nurse (photographer) and patient. Tell them that they will change the direction of the fixation target to the left and take a picture.
[0009]
Here, a full-time photographer (or a familiar nurse) as the instructed photographer knows that the left-right relationship between the doctor and the patient is reversed with respect to the doctor's “left-hand photographing instruction”. Therefore, in response to the doctor's “left direction shooting instruction”, shooting is performed by operating the shooting direction instruction means in the “right direction” on the monitor screen, so that no problem occurs.
[0010]
However, nurses who are not accustomed to the operation as the person to be imaged are not sufficiently accustomed to reversing the left-right direction. In some cases, a shooting operation in the “left direction” (an operation for instructing the shooting direction instruction means to perform left-side shooting) is performed. The doctor can also give instructions in consideration of the reversal in the left-right direction for nurses who are not used to it, but in this case, the right and left directions of the fixation target for the patient are reversed. . Therefore, when the nurse who is not familiar with the operation is the instructed photographer, it has been impossible to give instructions with consideration to both the patient and the nurse.
[0011]
In addition, when taking a picture through a directed photographer such as a nurse, a doctor (photographing instruction person) looking at the monitor screen often has this patient and the directed photographer (such as a nurse). Forgetting the fact that the left and right directions are reversed, the direction to be observed on the monitor screen may simply be designated as “right”.
[0012]
In this case, the instructed radiographer (nurse) knows that the left-right direction on the monitor screen is reversed from the left-right direction of the patient, so the doctor (imaging instructor) gives the “right” direction. On the other hand, the imaging direction instruction means is operated so that the fixation target presentation direction is “leftward” with respect to the patient. However, the patient searches for the fixation target in the “right direction” as the fixation target is presented in the “right direction” in accordance with the direction from the doctor (photographing instructor) to the right direction. The fixation target is moved “leftward” and presented. In such a case, the direction instructed by the doctor (imaging instructor) does not match the direction in which the instructed photographer (nurse) operates the imaging direction instructing means, which similarly causes trouble.
[0013]
Therefore, there is no problem if there is a dedicated instructed photographer who is familiar with the operation of the ophthalmologic photographing apparatus, but conventionally, special consideration should be given to the direction instructed by the doctor as the photographing instruction person. According to the instructed situation, the instruction photographer such as a nurse takes a picture with special consideration in the instructed direction to avoid the problem.
[0014]
In recent years, the sensitivity of television cameras for fundus cameras has rapidly increased, and ophthalmologic photographing apparatuses capable of easily photographing with non-mydriatic eyes are becoming popular. This is because the importance of cardiovascular disease testing such as diabetes testing has increased and the fundus is a simple technique for imaging blood vessels. Under such circumstances, fundus photography is not limited to the central part of the eye to be examined (so-called posterior pole part), but as social photography such as panoramic photography in which the fixation target is moved and the peripheral part of the fundus is photographed becomes social, The importance is increasing. Therefore, it is becoming preferable that such an ophthalmologic photographing apparatus can be easily used not only by an ophthalmologist but also by doctors in other fields such as internal medicine.
[0015]
Under such circumstances, relying on special considerations such as a doctor as an imaging instructor and a nurse as an instructed imaging person becomes an obstacle to the spread of ophthalmic imaging apparatuses. Actually, the difference between the left and right instruction systems increases the imaging time, which increases the burden on the patient. Since photographing around the fundus, such as panoramic photographing, has a large number of photographs, the photographing time becomes long and the burden on the patient becomes even greater, so improvement is desired.
[0016]
Therefore, the present invention has been made in view of the above circumstances, and the purpose of the present invention is to indicate the direction of indication for both the imaging instructor, the instructed radiographer, and the patient when the doctor instructs the next imaging site. An object of the present invention is to provide an ophthalmologic photographing apparatus that does not require special consideration.
[0017]
[Means for Solving the Problems]
According to the first aspect of the present invention, the eye to be examined is displayed as a moving image on the screen of the monitor, and the portion to be observed of the eye to be examined displayed on the screen is changed and the display portion is observed. In an ophthalmologic photographing apparatus that photographs each display part,
A fixation target projection optical system that guides the subject's eye toward a plurality of imaging regions to be imaged including left and right directions by projecting the fixation target toward the subject's eye, and at least a presentation position of the fixation target An ophthalmologic photographing apparatus comprising: a presentation position changing means for changing in the left-right direction; and a photographing direction switching means for switching the instruction direction of the photographing direction instruction means for instructing the photographing direction so that the left-right direction is symmetric. It is.
[0018]
According to this configuration, the direction of the photographing direction instruction means for instructing the photographing direction can be reversed and switched by the photographing direction switching means, so that diversity in the left-right direction of the ophthalmologic photographing apparatus increases. As a result, when the left-right direction of the patient and the doctor as the photographer or the nurse as the commanded photographer is reversed, the commanded direction of the imaging direction commanding means is switched to be symmetrical, thereby In such a case, there is no need to pay special attention to the left-right reversal of the imaging instruction direction for the imaging instruction person, the instructed user, and the patient.
[0019]
In addition, since the photographing instruction direction can be switched by the photographing direction switching means, a user who is accustomed to the conventional ophthalmologic apparatus can instruct based on the same instruction system as the conventional one. This allows doctors (photographers or photographers) and nurses (photographers or photographers) to take pictures in accordance with instructions in their own environment, even when their positions change. You can always shoot in the same environment, and you can shoot smoothly. This also makes it possible to diversify the ophthalmologic photographing apparatus.
[0020]
According to a second aspect of the present invention, the photographing direction switching means includes ophthalmic photographing direction switching means for switching the fixation target presentation direction so that the left and right directions are symmetrical. Device.
[0021]
With this configuration, the fixation target presentation direction switching means can switch the fixation target presentation direction by reversing the left-right direction, so that there is no reverse in the left-right direction by the nurse as the instructed photographer. For the instructor, the commanded photographer, and the patient, it is not necessary to pay special attention to the left and right reversal in the imaging instruction direction.
[0022]
The invention according to claim 3 is the ophthalmologic photographing apparatus according to claim 1, wherein the photographing direction switching means comprises image switching means for switching and displaying the left and right directions of the image on the monitor screen so as to be symmetrical. It is.
[0023]
If comprised in this way, if the image switching means reverses the left-right direction of the image on the monitor screen and switches and displays it, the reversal of the left-right direction between the patient and the doctor as the photographer or the nurse as the directed photographer Therefore, it is not necessary to pay special consideration to the right and left reversal in the direction of the photographing instruction for the photographing instructor, the directed photographer, and the patient.
[0024]
If the photographing direction switching means is configured to be set on the initial setting screen of the device on the monitor screen, the doctor often instructs the nurse to operate the device, or the doctor himself When the usage environment is fixed, such as when the device is often operated, it is switched according to the initial setting according to the usage environment, so there is no need to check the switching each time shooting with an ophthalmic imaging device, Does not cause daily troubles.
[0025]
In other words, the instruction trouble in the left-right direction is a problem for the user (examiner, photographing instructor, instructed photographer) who uses the ophthalmologic photographing apparatus. In the initial setting stage, if the initial setting can be performed in a state preferred by the user (examiner, photographing instruction person, instructed photographing person) who uses it, the diversity of the ophthalmologic photographing apparatus increases.
[0026]
Further, by displaying the shooting direction switching status based on the shooting direction switching means on the monitor screen, the user can always grasp the shooting direction switching status.
[0027]
According to a fourth aspect of the present invention, the ophthalmologic photographing apparatus shoots a plurality of photographing parts to be photographed as a part of the whole eye to be examined, and a plurality of photographs photographed by the still image photographing. 2. The ophthalmologic photographing apparatus according to claim 1, further comprising panoramic image processing means capable of displaying still images on the screen as panoramic images in association with each other.
[0028]
The ophthalmologic photographing apparatus according to claim 1 can expand diversity to users in fields other than ophthalmology such as a physician by increasing the diversity of the ophthalmic photographing apparatus provided with the panoramic image processing means. it can.
[0029]
With this configuration, it is possible to further reduce the burden on the patient when the number of shots such as panoramic shooting is large. In addition, by diversifying ophthalmologic photographing devices from the user's standpoint, it can be used not only by specialists but also by a wide range of examiners. The device can be spread.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an external view of a non-mydriatic type fundus camera as an example of an ophthalmologic photographing apparatus according to the present invention. In FIG. 1, reference numeral 1A is a base, reference numeral 1B is a gantry, reference numeral 1C is an apparatus body, reference numeral 2 is a chin rest, reference numeral 3 is a forehead support, reference numeral 4 is an external fixation lamp, reference numeral 5A is a joystick, and reference numeral 5B is a photograph. A switch, reference numeral 5C is an operation panel provided on the upper surface of the gantry 1B, reference numeral 5D is a focusing handle, and reference numeral 6 is a television camera.
[0031]
The ophthalmologic photographing apparatus is operated by a joystick 5A, a photographing switch 5B, various buttons or switches on the operation panel 5C, a focusing handle 5D, and an operation from a monitor screen 80 by a mouse (not shown). It can be operated. Hereinafter, these operations are collectively referred to as operation means 5.
[0032]
The TV camera 6 includes a shooting TV camera 6A and an observation TV camera 6B. The shooting TV camera 6A is connected to a monitor 8 via a still video recorder 7 as an image recording device, and is also controlled. 9 is connected. The observation television camera 6B is connected to the monitor 8 through the control device 9.
[0033]
On the other hand, in the apparatus main body 1C, as shown in FIG. 2, an illumination optical system 10 for illuminating the fundus oculi Ef of the eye E, a photographing optical system 20 for photographing the fundus oculi Ef, and an observation for observing the fundus oculi Ef An optical system 30, an alignment optical system 40 for aligning the apparatus main body 1C with the eye E, and an internal fixation target projection optics for projecting a fixation target on the fundus oculi Ef to fixate the eye E System 50.
[0034]
The illumination optical system 10 is an optical system that illuminates the fundus oculi Ef with infrared light during observation and illuminates the fundus oculi Ef with visible light during imaging, and includes an objective lens 11, a perforated mirror 12, a relay lens 13, A reflection mirror 14, a relay lens 15, a ring aperture plate 16 having a ring aperture 16A maintained in a conjugate relationship with the pupil Ea of the eye E, a xenon lamp 17a as an imaging light source, an IR filter 18, and a condenser lens 19 and a halogen lamp 17b as an observation illumination light source. Further, when the distance W between the eye E and the objective lens 11 is arranged at an appropriate working distance, the perforated mirror 12 is arranged at a position conjugate with the cornea C of the eye E.
[0035]
In the optical path of the illumination optical system 10, a bar mirror 190a constituting a part of the focus index projection optical system 190 is removably inserted at a position optically conjugate with the fundus oculi Ef of the eye E to be examined. Details of the focus index projection optical system 190 are disclosed in, for example, Japanese Patent Laid-Open No. 9-66032.
[0036]
The focus index projection optical system 190 is interlocked with the focusing lens 21 (described later) of the observation optical system 30 and the imaging optical system 20 so that the focus index plate (not shown) and the fundus oculi Ef are always optically conjugate. Thus, the illumination optical system 10 moves in the optical axis direction. The focus index projection optical system 190 includes a prism, a two-hole aperture plate, and the like. If the fundus oculi Ef and the focus index are not conjugated, two focus index images 191 are obtained as shown in FIG. It is configured so that it can be easily focused by aligning them into one. As a result, an index image 191 based on the focus index projection optical system 190 is displayed on the monitor screen 80, and when the index images 191 coincide with each other, it is determined that they are in focus and photography is possible. The examiner can adjust the focus while viewing the index image 191. This focusing mechanism may be another method, for example, a method disclosed in Japanese Patent Publication No. 61-91.
[0037]
The photographing optical system 20 is an optical system for photographing the fundus oculi Ef illuminated by the illumination optical system as a still image, and includes an objective lens 11, a perforated mirror 12, a focusing lens 21, an imaging lens 22, It has a reflection mirror 23, a field lens 24, a reflection mirror 25, a relay lens 26, and a photographic television camera 6A. The imaging device 6a of the photographic television camera 6A is optically conjugate with the fundus oculi Ef. Maintained.
[0038]
The observation optical system 30 is an optical system for observing the fundus oculi Ef illuminated by the illumination optical system 10, and is configured to be branched by a quick return mirror 33 from the middle of the optical path of the photographing optical system 20, and the reflection mirror 35. , The relay lens 36 and the observation TV camera 6B. The observation TV camera 6B is disposed at a position optically conjugate with the image pickup device 6a (shooting TV camera 6A) with respect to the quick return mirror 33. Yes.
[0039]
The alignment index projection means 40 is for projecting the alignment index toward the eye to be examined, and reflects the light emitted from the LED 41 as the alignment light source, the light guide 42 that guides the emitted light of the LED 41, and the light guide 42. A reflecting mirror 44 that leads to the two-hole aperture 43, a relay lens 45, a half mirror 46 for branching from the photographing optical system 20, a perforated mirror 12, and an objective lens 11 are provided.
[0040]
The two-hole aperture 43 is disposed close to the relay lens 45. As shown in FIG. 4, a two-hole aperture 430 for designating the center position of the fundus oculi Ef, and a two-hole aperture 430 for designating the peripheral position of the fundus oculi Ef Is switched and inserted into the optical path by a switching operation of the two-hole aperture switching means 47 by a solenoid (not shown).
[0041]
Each of the two-hole diaphragms 430 (or 431) has a pair of hole portions 43a and 43b formed at symmetrical positions with respect to the optical axis O1, and the hole portions 43a and 43b of the two-hole diaphragm 431 for the peripheral portion are formed on the fundus oculi. It is slightly separated from the optical axis 01 in order to align the designated position of the peripheral part. Thereby, the separation distance between the middle part of the fundus oculi Ef and the peripheral part is set. Further, the two-hole aperture 431 for designating the peripheral position can be rotated in the direction of a double arrow about the optical axis 01 while being inserted in the optical path.
[0042]
The alignment index projection means 40 designates only the declination direction while keeping the equidistance from the center of the fundus oculi Ef by designating the rotation angle θ for rotating the two-hole aperture 431, and directs the alignment index toward the eye E to be examined. Can be projected. In this embodiment, the rotation angle θ is set so as to be rotated in units of 45 degrees. However, the rotation angle (setting angle) θ is freely set corresponding to the position of the fixation light source described later. Is possible.
[0043]
The half mirror 46 has a transmission characteristic T that transmits about 100% of the light beam having a wavelength of 760 nm and transmits almost 100% of the light beam in the other wavelength region, and the amount of the reflected light beam from the fundus oculi Ef is the half mirror 46. It is suppressed that it falls by existence of.
[0044]
The LED 41 has a characteristic of emitting near infrared light having a center wavelength of 760 nm. The exit end 42a of the light guide 42 is disposed so as to be positioned on the optical axis O1 of the relay lens 45 (the optical axis O of the photographing optical system 20). The two-hole aperture 43 is an optical means for separating and projecting the alignment image 421 based on the alignment light beam onto the eye E when the working distance W deviates from an appropriate position.
[0045]
The alignment beam emitted from the exit end 42 a of the light guide 42 is reflected by the reflecting mirror 44 and guided to the two-hole aperture 43, and the alignment beam passing through the holes 43 a and 43 b of the two-hole aperture 43 is guided to the relay lens 45. It is burned. The alignment light flux that has passed through the relay lens 45 is reflected by the half mirror 46 toward the perforated mirror 12. The relay lens 45 temporarily forms an intermediate image at the exit end (alignment index) 42a of the light guide 42 at the central position X (the position on the optical axis O1 of the photographing optical system 20) X of the hole 12a of the perforated mirror 12. A pair of alignment light beams forming an alignment index formed at the central position X of the hole 12a is guided to the cornea C of the eye E through the objective lens 11.
[0046]
An internal fixation target projection optical system 50 is arranged by being branched by a dichroic mirror 53 having a characteristic of transmitting infrared light and reflecting visible light from the middle of the optical path of the observation optical system 30. The fixation target projection optical system 50 is an optical system that projects a fixation target for guiding to the central portion (so-called posterior pole portion) of the eye E and its peripheral portion, and a fixation light source 51 such as a light emitting diode. A mask plate 52 provided opposite to the fixation light source 51, and a dichroic mirror 53.
[0047]
For example, as shown in FIG. 5, the fixation light source 51 includes a fixation light source 510 disposed in the center, and eight fixation light sources disposed at equal intervals on a circumference centered on the fixation light source 510. 511-518. The central fixation light source 510 is for observation / photographing centered on the macular portion of the fundus oculi Ef, and the fixation light sources 510R and 510L are ranges determined by the “Elderly Health Law” according to the right and left of the eye E to be examined. It is for shooting. The peripheral fixation light sources 511 to 518 are for observation and photographing of the fundus oculi Ef, and the mask plate 52 faces the fixation light sources 510 (510R and 510L) to 518 as shown in FIG. Pinholes 520 (520R, 520L) to 528 are provided. The two-hole aperture 431 is rotated in conjunction with the lighting of the fixation light source 51.
[0048]
The light from the fixation light source 51 (510 to 518) passes through the pinholes 520 to 528 of the mask plate 52 and passes through the half mirror 53, the imaging lens 22, the focusing lens 21, and the objective lens 11, and the fundus oculi Ef. A pinhole image is projected as a fixation target. As a result, a pinhole image is formed on the fundus oculi Ef, and a fixation target is presented to the eye E to be examined. The subject fixes the fixation by visually recognizing the fixation target.
[0049]
Depending on whether one of the fixation light sources 510 and 511 to 518 is turned on, the fixation direction of the subject with respect to the optical axis O of the imaging optical system 20 is switched, and thereby the region of the fundus oculi Ef to be observed and imaged is determined. Can be changed. The fixation light source 51 can be freely set in terms of the number and arrangement of fixation targets, such as a line such as a cross, vertical and horizontal lines, a triangle, a pentagon, and a regular hexagon.
[0050]
For example, when the fixation light sources 510 to 518 are sequentially turned on, that is, when eight (octagonal) fixation light sources (511 to 518) are turned on around the fixation light source 510, The two-hole aperture 431 is rotated in units of 45 degrees. Further, when the fixation light source 51 is turned on in a cross, the two-hole aperture 431 is rotated in units of 90 degrees, and when one line (for example, the fixation light sources 510, 513, and 517) is turned on, the two holes. The diaphragm 431 is rotated in units of 180 degrees.
[0051]
The alignment image reference position mark 54 (540 to 548) is displayed on the monitor screen 80 in conjunction with the lighting of the fixation light source 51 (510 to 518). The alignment reference position marks 541 to 548 that indicate the periphery are positions of the alignment index image that is deviated from the imaging optical axis O because the corneal vertex Cf is out of the imaging optical axis O when imaging the fundus periphery. The image position is previously suggested to the examiner. Thus, the examiner can easily adjust the alignment even when photographing the peripheral portion. Therefore, the alignment reference position mark 54 is monitored in response to switching of the fixation target presentation position by the presentation position changing means (fixation target position selection means operated by a display frame 61 or buttons 76 to 78 described later). The display position on the screen 80 is switched.
[0052]
This presentation position changing means (control of the lighting positions of the fixation light sources 510 to 518) may be anywhere, but in this embodiment, the operation of the monitor screen 80 at the time of observation and photographing or on the operation panel Depending on the operation.
[0053]
On the monitor screen 80, as shown in FIG. 3, a portion to be imaged as a portion of the entire fundus oculi Ef is displayed as a fundus image Er at the center of the screen. This fundus oculi image Er is a moving image or a still image. In FIG. 3, it is assumed that the eye E (left eye) is fixing the fixation light source 510L designated by the “Geriatric Health Law”, and the monitor screen 80 has an image corresponding to the central portion (rear pole portion). A site to be displayed is displayed as a fundus image Er0 as a moving image. Note that the fixation light source 510L and the fixation light source 510R may be simply described as the fixation light source 510 in the following description.
[0054]
In addition, on the monitor screen 80, a portion of the monitor screen 80, for example, the lower left, a portion under observation (or a photographing portion) as a portion with respect to the entire fundus Ef is displayed together with the moving image displayed as the fundus oculi image Er. A display frame (also used as an imaging direction instruction means) 61, a luminance information frame of an illumination light source (also used as a brightness adjustment virtual slide knob) 62, an information frame 63 relating to the amount of imaging light, patient information, and the like are appropriately arranged. The arrangement can be changed at the initial setting of the ophthalmologic photographing apparatus or at an arbitrary stage.
[0055]
As shown in FIG. 7, the display frame 61 includes nine cells 610 to 618, and the center cell 610 corresponds to the center fixation light source 510 (or 510R, 510L), and is above (12 on the clock). The grid 611 in the (time direction) corresponds to the fixation light source 511, the grid 612 in the upper right (1:30 in the clock direction) corresponds to the fixation light source 512, and the grid 613 in the right (3 o'clock in the clock) This corresponds to the light source 513. Similarly, the cells 61... Correspond to the fixation light source 51. The upper left (10:30 on the clock) cell 618 corresponds to the fixation light source 618. The examiner can select the display position of the fixation target, that is, the position of the region to be imaged with respect to the entire fundus oculi Ef by selecting each of the cells 610 to 618 in the display frame 61 by operating the mouse or the like. it can. Note that a schematic diagram (recognition pattern) schematically representing the pattern of the fundus oculi Ef may be drawn on the display frame 61.
[0056]
In the panoramic imaging, the display frame 61 is preferably configured to visually distinguish a site that has been shot, a site that is about to be shot, and a site that has not been shot yet. In this distinction, the luminance or saturation may be changed, and the luminance or saturation of the part to be photographed may be higher or lower than the other parts. Alternatively, it may be configured such that a part to be photographed blinks (blinks) and can be visually recognized as compared with other parts.
[0057]
In FIG. 7, the imaged region 61A is indicated by a hatched portion indicating “white or white”, and the region 61B to be imaged is indicated by a horizontal line portion indicating “flashing” and is still imaged. The part 61C that has not been identified is marked as no mark representing "low brightness or black". In each of the cells 610 to 618, the number of still images taken at each part is represented by “Arabic numerals” (1, 2,...).
[0058]
The central cell 610 may be displayed as “c” in the case of the center of the optical axis, and “R” and “L” in accordance with the left and right eyes of the eye E to be examined in the “Geriatric Health Law” designated position. .
[0059]
As a result, the part to be imaged at present is the blinking (horizontal line) cell 613 (61B), and this cell 613 indicates that one image has already been captured. Further, since the cells 610, 611, and 612 (61A) are white or white (shaded lines), it indicates that the number of still images that have been indicated by numbers has already been completed, and the cells 614 to 618 have low luminance. Or, it is black (no mark), indicating that it has not been shot yet.
[0060]
In this way, by displaying the region 61B that is currently being imaged, the region 61C that has not yet been imaged, and the region 61A that has already been imaged as a part of the entire panoramic image that is the target, The examiner (photographer) understands at a glance which part is being photographed (or observed) as a panoramic image and which part is to be photographed.
[0061]
The operation on the display frame 61 is performed by clicking on the cells 610 to 618 with the mouse to turn on the corresponding fixation light sources 510 to 518 (positions to be observed or photographed). Can be executed by fixing. The lighting position of the fixation light source (or the position to be photographed / observed) can also be operated by an operation panel. Details thereof will be described later together with the description of the operation panel.
[0062]
Next, the connection relationship of the control device 9 will be described with reference to FIG.
[0063]
The control device 9 includes a calculation unit such as a personal computer and a storage unit, and may be incorporated in the ophthalmologic photographing apparatus main body or linked to a control device such as an external personal computer. The control device 9 is connected to a monitor 8, a still video recorder 7, a photographing television camera 6A, and an observation television camera 6B. In this example, the monitor 8 is built in the main body, but may be used together with an external monitor at the same time, and this external monitor may be connected to an external personal computer (a part of the control device 9).
[0064]
Further, the control device 9 may be connected to various operation means 5 and operated according to a predetermined program according to instructions from the respective operation means 5. Examples of the operation means 5 include a joystick 5A, a photographing switch 5B, an operation panel 5C, a focusing handle 5D, a mouse (not shown), other power supplies, and operation switches. Although it is connected to various alignment detection / correction circuits in the xyz direction, a focus detection circuit, their control circuit, a drive circuit, etc., details thereof are omitted. The control circuit 9 controls the still video recorder 7 and the monitor 8 according to a preset program in accordance with various input signals from these operating means.
[0065]
For example, the ophthalmologic photographing apparatus according to the present invention includes a fixation direction instruction unit that controls the lighting position of the fixation light source 54 as the photographing direction instruction unit 100, and the fixation direction instruction unit includes 2 as described above. Control is performed in conjunction with rotation control of the aperture stop 431, selection means for the alignment reference position mark 54, and the like. Further, the photographing direction instruction means 100 (fixation direction instruction means) is symmetrical in the left-right direction with respect to the photographing instruction direction (presentation position of the fixation target) by the fixation target presentation direction switching means as the photographing direction switching means 110. It is switched as follows.
[0066]
In an ophthalmologic photographing apparatus having an image switching means for switching and displaying an image on the monitor screen 80 so as to be symmetrical, the photographing direction switching means 110 sets the image display direction of the image switching means to the left and right. Image direction switching means for switching symmetrically may be used.
[0067]
Such switching of the shooting direction can be performed via the control means 9, and the fixation direction instruction means and the image direction instruction means are switched by the electrical switching means so that the shooting directions are symmetrical. Also good. In this embodiment, as shown in FIG. 8, for convenience, all the instruction means are connected to the control means 9, and each drive means is controlled by an instruction from the control means 9.
[0068]
As shown in FIG. 9, the operation panel 5 </ b> C includes a left operation panel 70 and a right operation panel 75 centered on the joystick 5 </ b> A. The left operation panel 70 includes a pair of buttons 71 that move the chin rest 2 up and down. 71, up arrow (with human mark), menu button 72 with menu mark (m mark), lightning mark and selection buttons 72L, 72M, 72H with L, M, H mark, sun mark Light amount adjustment buttons 73+ and 73− for the illumination light source.
[0069]
On the other hand, at the center of the right operation panel 75, there are arranged three buttons for selecting a position to be photographed (a photographing direction instruction means and a photographing direction switching means). A center button 76 is a button (corresponding to the fixation target 510) for returning the fixation target to the center (central portion), and a button 77 with a left arrow moves the fixation target presentation position to the left. A button 78 with a right arrow is a button for moving the fixation target presentation position to the right (clockwise). The fixation target may be returned from the position 510R to 510L of the “Geriatric Health Law” with the center button 76. Reference numeral 79 denotes a switch for fluorescent photographing such as a fluorescent timer.
[0070]
These operation buttons 76 to 78 may have a function of sequentially moving the fixation target by a previously programmed method in the case of panoramic photography or the like. For example, these operation buttons 76 to 78 function as panorama mode selection buttons, and after shooting at the center is completed by the button 76, the buttons 77 or 78 are pressed to switch to shooting of the peripheral portion. A two-hole aperture 431 for partial photographing is inserted, and photographing of the fundus oculi Ef at a position corresponding to the eyelet 611 becomes possible. Next, the selection position of the fixation target is sequentially changed depending on whether the two-hole aperture 431 is rotated clockwise or counterclockwise by selection of the button 77 or 78. At the same time, the position selection means of the reference position mark 54 is changed so that the alignment reference position mark 54 is interlocked and displayed at a predetermined position on the monitor screen 80, and the target region to be photographed is the fundus image Er1-8. Can be observed and photographed.
[0071]
Thereby, when photographing the fundus oculi Ef pole part, the fixation light source 510 located in the center is turned on, the fixation target of the pinhole 520 corresponding to the eye E to be examined is presented, and the central part to be imaged ( For example, the fundus oculi Ef posterior pole portion) can be photographed as the fundus oculi image Er0.
[0072]
Further, when photographing the fundus peripheral part Ef ′, the fixation light sources 511 to 518 corresponding to the right, left, upper, lower, etc. corresponding to the photographing of the fundus peripheral part to be photographed are turned on, and these are applied to the eye E to be examined. The fixation targets of the pinholes 521 to 528 corresponding to the above are presented. On the monitor screen 80, a focus index image 191, an alignment reference position mark 54 corresponding to a target position, and an alignment image 421 are displayed together with a moving image representing the fundus oculi Ef.
[0073]
The examiner performs focusing and alignment adjustment by adjusting the index image 191 or by performing alignment adjustment so that the alignment image 421 becomes one at the center position of the alignment reference position mark 54.
[0074]
When the working distance W (z direction) and the positions in the vertical and horizontal directions (xy direction: the direction orthogonal to the optical axis O) are appropriate, as shown in FIG. 10, an image 421 of the emission end 42 a is displayed together with the fundus oculi image Er. It is displayed on the monitor screen 80 so as to coincide with the center of the alignment reference position mark 54. Further, when the alignment is deviated from the proper position, an image 421 of the emission end 42a is formed separately as shown in FIG. 3, so that the examiner visually recognizes matching / separation of the alignment image 421 based on the alignment light flux. By doing so, alignment adjustment can be performed.
[0075]
An example of observation and imaging procedures using the fundus camera configured as described above will be described.
[Initial setting of fundus camera]
Prior to imaging, the examiner can make initial settings for the fundus camera. This initial setting can be performed by an operation on the monitor screen 80. For example, when the menu button 72 is pressed, a menu screen is displayed. On this menu screen, as with normal initial fundus camera settings, display operations such as separating necessary information from unnecessary information, setting the display range of the monitor screen 80, and the reference value of the amount of photographic light Setting, selection of an external storage device and a photographing device to be connected (selection of signal system such as timing), and the like are set. Also, selection of internal fixation or external fixation as fixation, and selection of the number of internal fixations when using internal fixation are set so as to be hierarchically displayable.
[0076]
The buttons 72L and 72H are set so as to be changed to the operating means 5 for moving the cursor on the menu screen 80 up and down when the menu is selected. By operating these buttons 72L and 72H, the cursor is moved to a target position, and the menu is selected by pressing the confirm button 72M. By selecting this menu, the shooting direction switching screen is selected.
[0077]
FIG. 11 shows an example of the monitor screen 80 on which the photographing direction switching screen is displayed. In FIG. 11, the shooting direction switch “present” is selected (presence is reversed), and “fixation target presentation direction switching” as the selection means is reversed so that the fixation target presentation direction switching means The state selected on the reverse side is shown. By selecting or deselecting the fixation target presentation direction switching means (switching of the shooting direction), the right and left of the fixation target presentation direction are reversed. Further, by selecting the image direction switching, the left and right direction of the image on the screen is reversed and displayed. This image direction switching means may not be set on the monitor screen 80. When using an external personal computer, switching on the image setting screen may be performed.
[Observation of fundus oculi Ef and photographing of fundus oculi Ef center]
Since the configuration is publicly known, details thereof are omitted, but a normal non-mydriatic fundus camera is configured to be able to observe a pupil image for observing the pupil diameter Pd. Therefore, in order to observe and photograph the fundus oculi image Er, the fundus oculi Ef observation is performed after optically adjusting the distance w between the fundus camera and the eye E to be kept at an appropriate distance for photographing the fundus oculi Ef.
[0078]
In the case of fundus oculi Ef observation, the fundus oculi Ef is illuminated with infrared light by the illumination optical system 10. When the same light source is used, only infrared light may be selected by inserting / removing an appropriate optical filter into / from the illumination optical system 10. In this example, the halogen lamp 17b as the observation light source is turned on with the IR filter 18 inserted.
[0079]
The reflected light beam (infrared light) from the fundus oculi Ef forms a fundus image Er on the observation television camera 6B by the observation optical system 30. The image information is displayed on the monitor screen 80 as a monochrome moving image on the monitor screen 80 via the control circuit 9.
[0080]
The examiner observes the fundus oculi Ef on the monitor screen 80 while performing alignment adjustment and focusing. When photographing, when the examiner presses the photographing switch 5B, based on the operation of the photographing switch 5B, the xenon lamp 17a (visible light), which is the photographing light source, is emitted synchronously and reflected from the fundus oculi Ef. Light is imaged by the photographing optical system 20 to form a fundus image Er as a color still image on the image sensor (imaging tube) 6a of the photographing television camera 6A.
[0081]
The fundus oculi image Er formed on the photographing television camera 6A is recorded in the still video recorder 7 together with necessary image information, and the still image Er is displayed on the monitor screen 80. Here, the necessary image information includes image information such as a patient name, an imaging date, an imaging time, an imaging name, a necessary imaging position information for reproducing a panoramic image, and information on the number of installed images in the imaging region. May be included.
[0082]
In observation / photographing of the fundus oculi Ef center, the button 76 is selected, and the eye mesh 610 blinks (horizontal line in the figure), so that it is visually recognized that the fundus oculi Ef center is selected as a site to be observed or imaged. Yes (Figure 3). By pressing the photographing switch 5B in the state where photographing after completion such as alignment is required, a still image Er0 near the rear pole part in the center of the fundus oculi Ef is received by the photographing television camera, as shown in FIG. The still image Er0 is displayed. Thereby, the examiner can confirm that the photographing has been performed reliably, and can move to the next observation and photographing. The still image Er0 is recorded together with other image information by assigning an image number (for example, 00) to the still video recorder 7. The cell 610 displays the number of shots “1”. By pressing the shooting switch 5B again, a moving image is displayed.
[0083]
Note that the observation image (moving image) and the photographed image (still image) are different from each other in black and white and are apparent on the monitor screen 80, but may be substantially the same in the drawings. In the description of the embodiment, the same reference numerals are assigned to the same drawings.
[Around the fundus oculi Ef or panoramic photography]
When photographing of the central part of the fundus oculi Ef is completed, when the examiner performs photographing of the peripheral part or selects the panoramic photographing mode, the control device 9 displays the fundus image Er corresponding to the selection on the monitor screen 80. Display in the center. The peripheral portion may be imaged by selecting the position of the display frame 61 with a mouse or the like.
[0084]
Normally, the panoramic imaging mode or the button 77 or 78 is selected in a state where the fundus image Er0 of the central part is displayed as a moving image on the monitor screen 80 (the state shown in FIG. 10). When the panorama shooting mode or the button 77 or 78 is selected, the fixation target 511 for presenting the 12 o'clock direction of the fundus oculi Ef is turned on as the fixation target presentation position, and below the monitor screen 80 (6 o'clock direction). As shown in FIG. 12, an alignment reference position mark 541 is displayed. The cell 611 blinks to indicate that it is a position for photographing, and is indicated by a horizontal line in the drawing. On the other hand, since the cell 610 has been photographed, it is represented by “white” (diagonal line), and a number “1” indicating the number of photographed images is displayed on the cell 610.
[0085]
When the alignment and focusing are completed, the examiner can take the fundus image Er1. When shooting is performed by operating the shooting switch 5B, the still image Er1 is received by the shooting TV camera 6A by the shooting optical system 20, and the still video recorder 7 receives necessary image information together with the image number (for example, 11). The number “1” is displayed in the cell 611.
[0086]
At this time, the still image Er1 is displayed on the monitor screen 80. However, since the resolution of this image is not appropriate, the examiner takes an image again. The re-shooting can be performed by clicking the grid 611 with a mouse to display a moving image on the monitor screen 80, performing a necessary operation such as alignment, and then pressing the shooting button 5B. The still image Er1 is received by the photographing television camera, and the image number is incremented by “1” in the still video recorder 7 and recorded, for example, as “12” together with necessary image information. At this time, the cell 611 is incremented by “1” and a number “2” is displayed, thereby confirming that two images have been taken at the portion corresponding to the cell 611.
[0087]
When the examiner operates the button 78 to image the next imaging region, the fixation target is rotated clockwise, and the upper right (1:30) fixation light source 512 is turned on for the patient. Accordingly, the fundus oculi Ef in the direction of fixing the upper right with respect to the patient (the direction of 10:30 with respect to the fundus oculi Ef) is displayed as a moving image Er2 in the center of the monitor screen 80 as shown in FIG. At this time, the alignment position reference mark 542 is displayed at the lower right (4:30 position) of the screen, the grid 612 blinks (horizontal line), and the examiner can recognize that the next photographing location is the fundus image Er2. At the same time, the cells 610 and 611 are white (hatched), and it is confirmed that the photographing is finished.
[0088]
The examiner adjusts the alignment by aligning the alignment image 421 with the center of the alignment reference position mark 542. After the focusing is completed, the examiner performs photographing by operating the photographing switch 5B. The still image Er2 is received by the photographing television camera and recorded on the still video recorder 7 together with the image number (for example, 21) and other necessary image information.
[0089]
When the examiner clicks the cell 613 for the next imaging, the fixation light source 513 is turned on, and the patient fixes the fixation target displayed on the right side. As a result, as shown in FIG. 14, the monitor screen 80 displays the moving image Er3 in the 3 o'clock direction (the fundus oculi Ef in the 9 o'clock direction) for the patient. The examiner adjusts the alignment by aligning the alignment image 421 with the center of the alignment reference position mark 543 displayed on the right side of the screen (3 o'clock direction), and operates the shooting switch 5B after focusing to finish shooting. Can be executed (FIG. 15).
[0090]
By repeating the above operation, still images corresponding to the cells 611 to 618 are sequentially recorded together with image information necessary for the still video recorder 7. During this time, the examiner continuously performs panoramic imaging while visually confirming the region 61B where imaging is performed, the region 61C where imaging is not performed, the region 61A where imaging is performed, and the number of images taken. Can do. As a result, when the examiner is observing the eye to be examined, the moving image Er can be displayed together with the position of the imaged region 61A that has already been imaged and the imaged region 61B to be imaged. It is possible to intuitively grasp the mutual relationship with the imaging region 61A that has already been imaged when observing the imaging region 61B.
[0091]
If it is desired to shoot counterclockwise, the button 77 may be operated instead of the button 78. Further, the rotation direction of the imaging region during imaging can be determined by selecting the buttons 77 and 78.
[0092]
In the above operation, the left-right direction of the examiner and the left-right direction of the image on the monitor screen 80 are reversed. Therefore, when a directed photographer such as a nurse is interposed, the doctor reverses the photographing direction. In some cases, the nurse makes a mistake and operates the left and right directions in reverse. In such a case, since the nurse is not accustomed to the left-right reversal, the direction of operation of the button 77 and the button 78 is switched by the photographing direction switching means based on the initial setting in advance. Can be prevented.
[0093]
Similarly, according to the ophthalmologic photographing apparatus or monitor in which the left-right direction of the image on the monitor screen 80 is switched, the left-right direction of the image on the monitor screen 80 is the same as the left-right direction of the patient. Even if the patient is instructed, the patient, the examiner, the nurse, and the imaging instructor can perform imaging without being confused. Such left-right reversal of the image can be reversed using known image processing software when the image is manipulated by an external personal computer.
[0094]
For this reason, when an error is expected to occur in advance, the menu screen shown in FIG. 11 is used to select whether to switch the fixation target presentation direction or the left-right direction of the image. Trouble can be prevented in advance.
[0095]
Further, by switching the left and right of the image on the monitor screen 80, it is not necessary for the doctor (imaging instructor), nurse (instructed photographer), and patient (subject) to pay attention to the left and right directions. That is, when the doctor (photographing instructor) wants to photograph the left according to the monitor screen 80, the doctor (instructor) simply instructs “left direction”. "Can be taken. As a result, the fixation target will be presented to the patient in the “left direction”, and the patient will definitely search for the fixation target presented in the left direction by searching for the left direction according to the doctor's instructions. Can do. In this way, doctors, nurses, and patients can take special care by using this changeover switch when there is a shooting instruction person such as a nurse or when the doctor himself becomes a photographer. Without doing so, the direction of instruction will not be confused.
[0096]
This allows doctors (photographers or photographers) and nurses (photographers or photographers) to take pictures in accordance with instructions in their own environment, even when their positions change. You can always shoot in the same environment, and you can shoot smoothly.
[0097]
As described above, by diversifying the ophthalmologic photographing apparatus from the standpoint of the user, it is possible to photograph the peripheral part such as panoramic photographing by being configured so that it can be used not only by specialists but also by a wide range of examiners. An ophthalmologic photographing apparatus can be spread. [Panorama image formation]
When panoramic image formation is operated by the operation means 5 after the photographing of the parts Er0 to Er8 to be photographed, the fundus image is displayed as a whole image (panoramic image) on the monitor screen 80 by the still images Er0 to Er8 as shown in FIG. Is displayed. Here, it is assumed that there is a still image with a very high luminance or a low still image by comparing the luminances of the still images Er0 to Er8.
[0098]
In that case, the still image with high brightness or the low still image is designated by clicking on the image where the cursor is located by moving the cursor by the operation means 5 such as a mouse. Then, the designated still image appears on the surface of the monitor screen 80, and at the same time, the brightness adjustment virtual slide knob 62 is displayed on the monitor screen 80.
[0099]
The brightness adjusting virtual slide knob 62 can be operated on the screen by the operating means 5 so that the brightness of the adjacent still images does not feel uncomfortable, and the still images can be continuously connected without feeling discomfort. Can be synthesized.
[Continue shooting from a panoramic image]
When a desired still image (here, Er1) is called from the panoramic image and designated on the monitor screen 80, the still image Er1 is enlarged and a display frame (or recognition pattern) 61 is displayed (FIG. 10). . As a result, the monitor screen 80 is shown as a still image Er1 in which a part of the panoramic image shown in FIG. 16 is enlarged and displayed. When the photographing switch 5B is operated in this state, the fixation light source 511 is turned on to observe the fundus image Er1 in a state where the relative position to the still image Er1 is maintained on the monitor screen 80. The fundus image Er1 shown in FIG. 10 is displayed again as a moving image. As a result, the observation site is displayed as a moving image in association with the still image on the monitor screen 80, and the control device 9 also functions as a display control means for controlling them.
[0100]
In this state, by operating the imaging switch 5B again after alignment adjustment, imaging of the fundus imaging region Er1 can be performed again. As a result, the still image Er1 taken again is recorded in the still video recorder 7 together with other image information by incrementing the image number by one.
[0101]
As a result, after a panoramic image is formed, it is necessary immediately while observing the panoramic image when a part of the obtained still image Er is indistinct due to a positional shift, a focus shift, etc. in contrast to other still images. Can be executed while visually recognizing the association with the whole image.
[0102]
In such a continuation of shooting from a panoramic image, the shooting instructor, the instructed instructor, and the patient must be reversed left and right in relation to the patient. It is assumed that the user forgets the camera, or is confused because he / she is unfamiliar, but in such a case, it can be avoided by changing the shooting direction according to the situation.
[0103]
As described above, in the embodiment of the present invention, since the fixation light sources 511 to 518 as fixation targets are arranged in a radial pattern around the fixation light source 510, a still image (fundus image) of an adjacent fundus region is obtained. Although there is an advantage that the overlapping portion can be reduced, the arrangement and number of the fixation light sources 51 can be freely set according to the purpose. In addition, here, a fundus image within a range of 80 degrees centered on the center of the fundus oculi Ef can be photographed, but a fundus image within a range of 100 degrees and 120 degrees may be photographed.
[0104]
A movable fixation target whose position can be arbitrarily changed may be used as the internal fixation target.
[0105]
In the embodiments of the invention described above, the case of performing panoramic shooting using internal fixation has been described. However, panoramic shooting may be performed using external fixation.
[0106]
Further, the fixation target presentation position is sequentially changed based on the selection of the operation mode, and the alignment reference position mark 54 is changed and displayed in conjunction with this, but this is disclosed in JP-A-11-4808. Thus, for example, the presentation position of the alignment reference position mark 54 may be changed in accordance with the change of the presentation position of the fixation target, the optical path length of the alignment index projection system is corrected, or the alignment reference position mark 54 The presentation position of the fixation target and the presentation position of the alignment reference position mark 54 may be changed by selecting the presentation position or the position of the display frame 61 on the monitor screen 80.
[0107]
【The invention's effect】
According to the ophthalmologic photographing apparatus according to claim 1 of the present invention, when the doctor as the photographing instructor instructs the next photographing part, special consideration is given to the designated direction for the photographing instructor, the directed photographer, and the patient. An ophthalmologic photographing apparatus that does not have to pay is provided.
[0108]
With this configuration, the direction of the photographing direction instruction means for instructing the photographing direction by the photographing direction switching means can be reversed and switched, so the diversity of the ophthalmologic photographing apparatus in the left-right direction increases. As a result, when the left-right direction of the patient and the doctor as the photographer or the nurse as the commanded photographer is reversed, the commanded direction of the imaging direction commanding means is switched to be symmetrical, thereby In such a case, there is no need to pay special attention to the left-right reversal of the imaging instruction direction for the imaging instruction person, the instructed user, and the patient.
[0109]
In addition, since the photographing instruction direction can be switched by the photographing direction switching means, a user who is accustomed to the conventional ophthalmologic apparatus can instruct based on the same instruction system as the conventional one. This allows doctors (photographers or photographers) and nurses (photographers or photographers) to take pictures in accordance with instructions in their own environment, even when their positions change. You can always shoot in the same environment, and you can shoot smoothly. This also makes it possible to diversify the ophthalmologic photographing apparatus.
[Brief description of the drawings]
FIG. 1 is an external view of an ophthalmologic photographing apparatus according to the present invention.
FIG. 2 is an optical diagram of an ophthalmologic photographing apparatus according to the present invention.
FIG. 3 is a diagram for explaining a monitor screen for explaining a state in which a region Er0 to be imaged is displayed on the screen as a moving image;
4 is a diagram for explaining the relationship between the arrangement of the hole portions of the two-hole aperture shown in FIG. 2 and the switching means 47 for switching the two-hole aperture. FIG.
5 is a diagram showing an arrangement state of light emitting diodes as the fixation light source shown in FIG. 2; FIG.
6 is a plan view for explaining an arrangement state of pinholes 520 to 528 of the mask plate 52 shown in FIG. 2. FIG.
7 is a diagram for explaining the details of an instruction frame 61 shown in FIG. 3; FIG.
8 is a diagram for explaining the control relationship of the control means 9 of the ophthalmologic photographing apparatus of FIG. 1. FIG.
FIG. 9 is a diagram for explaining details of the operation panel of FIG. 1;
FIG. 10 is a diagram for explaining a monitor screen for explaining a photographing procedure of a fundus oculi Ef center portion;
FIG. 11 is a diagram for explaining a monitor screen for explaining a photographing procedure in the vicinity of the fundus oculi Ef;
FIG. 12 is a diagram for explaining a monitor screen for explaining a procedure for photographing the periphery of the fundus oculi Ef.
FIG. 13 is a diagram for explaining a monitor screen for explaining a photographing procedure in the vicinity of the fundus oculi Ef.
FIG. 14 is a diagram for explaining a monitor screen for explaining a photographing procedure in the vicinity of the fundus oculi Ef.
FIG. 15 is a diagram for explaining a monitor screen for explaining a photographing procedure in the vicinity of the fundus oculi Ef;
FIG. 16 is a diagram illustrating a state in which still images are connected and displayed as a panoramic image on a monitor screen.
[Explanation of symbols]
E Eye to be examined
5 Operating means
50 Fixation target projection optical system
51 Fixation light source (fixation target)
52 Mask board
520-528 pinhole
61 Display frame (presentation position changing means)
76-78 operation buttons (presentation position changing means)
8 Monitor
80 Monitor screen
9 Control means
100 Shooting direction instruction means (presentation position changing means)
110 Shooting direction switching means
Er (Er0 to Er8) Movie (site to be photographed)

Claims (4)

The eye to be examined is displayed as a moving image on the screen of the monitor, and the part to be observed of the eye to be examined displayed on this screen is changed by the photographing direction instruction means for instructing the photographing direction, while observing the display part. In an ophthalmologic photographing apparatus for photographing the display part of
A fixation target projection optical system that guides the eye to be imaged toward a plurality of imaging regions to be imaged including left and right directions by projecting the fixation target toward the eye to be examined;
A presentation position changing means for changing the presentation position of the fixation target in at least the left-right direction;
Shooting direction switching means for switching the pointing direction of the shooting direction instruction means so that the left-right direction is symmetric,
An ophthalmologic photographing apparatus comprising: The ophthalmologic photographing apparatus according to claim 1, wherein the photographing direction switching unit is a fixation target presentation direction switching unit that switches a presentation direction of the fixation target so that a horizontal direction is symmetric. 2. The ophthalmologic photographing apparatus according to claim 1, wherein the photographing direction switching means is an image switching means for switching and displaying the left and right directions of the image on the monitor screen so as to be symmetric. The ophthalmologic photographing apparatus shoots a plurality of photographing parts to be photographed as a part of the whole eye to be examined, and associates a plurality of still images photographed by the still image photographing with each other as a panoramic image. The ophthalmologic photographing apparatus according to claim 1, further comprising: a panoramic image processing unit that can display the image.

Images