[go: up one dir, main page]

WO2009103359A1 - Procédé de préparation de lunettes pour personnes emmétropes presbytes, nécessaire pour la mise en œuvre du procédé, et lunettes ainsi obtenues - Google Patents

Procédé de préparation de lunettes pour personnes emmétropes presbytes, nécessaire pour la mise en œuvre du procédé, et lunettes ainsi obtenues Download PDF

Info

Publication number
WO2009103359A1
WO2009103359A1 PCT/EP2008/061435 EP2008061435W WO2009103359A1 WO 2009103359 A1 WO2009103359 A1 WO 2009103359A1 EP 2008061435 W EP2008061435 W EP 2008061435W WO 2009103359 A1 WO2009103359 A1 WO 2009103359A1
Authority
WO
WIPO (PCT)
Prior art keywords
lenses
correction area
spectacles
height
dioptric power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2008/061435
Other languages
English (en)
Inventor
Rudolf Hans Pfarrer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DALE VIEW LLC
Original Assignee
DALE VIEW LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DALE VIEW LLC filed Critical DALE VIEW LLC
Publication of WO2009103359A1 publication Critical patent/WO2009103359A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/021—Lenses; Lens systems ; Methods of designing lenses with pattern for identification or with cosmetic or therapeutic effects
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/024—Methods of designing ophthalmic lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G02C7/063—Shape of the progressive surface
    • G02C7/066—Shape, location or size of the viewing zones

Definitions

  • the present invention relates to a method for the preparation of spectacles for presbyopic emmetropic persons having the characteristics mentioned in the preamble of the main claim. It further relates to a kit for the implementation of the method, and also to spectacles thus obtained. Tprhnnlngiral harkgrni inH
  • presbyopia can be attributed to a reduction in the capacity for accommodation of the crystalline lens which is no longer capable of varying its curvature in a suitable manner.
  • This defect is independent of defects of vision connected to incorrect focal distance between the crystalline lens and the retina, such as for example myopia and hypermetropia, so that even a person free of such defects, termed emmetropic, is subject to presbyopia.
  • spectacles with a frame of reduced height, known as “half-moon spectacles” or “reading glasses”, on which is mounted a pair of lenses provided with positive dioptric power, suitable for correcting presbyopia.
  • These spectacles are normally worn resting on the end of the nose in such a way that, for distant vision, in which a person normally looks straight ahead, in the position known as “primary gaze position", the spectacles are substantially outside the angle of vision.
  • the person can take advantage of the corrective power of the spectacles by slightly lowering the gaze, into the reading position, or by wearing the spectacles directly in front of the eyes.
  • Spectacles of this type are sold, among other things, also in a pre-assembled version, with the lenses already coupled to the frame. In this way they can be made available to the users also at non-specialised points of sale, for example in large stores, and are normally supplied in a plurality of examples differing from one another only in the corrective power of the lenses.
  • the spectacles can be mass-produced on an industrial scale, thus benefitting from the economy of scale in order to keep down the production costs.
  • these spectacles have increasing difficulty in finding favour with the market.
  • the underlying reasons for this lack of appreciation appear to be both of a functional type, arising from the necessity of sometimes having to move the spectacles into different positions on the nose, and of the aesthetic type, arising from the fact that they impart to the person wearing them an undesirable appearance of an "elderly person".
  • Spectacles of this type provide a frame on which are mounted lenses of variable dioptric power in which a correction area with positive dioptric power is defined, having a value suitable for correcting the presbyopia of the subject, while the remaining portion of the lens has a zero dioptric power.
  • These spectacles can be worn in a normal manner, resting on the nose in proximity to the eyes, and their outward appearance does not differ from that of normal spectacles, and they are therefore well accepted by the market.
  • a further drawback of the conventional spectacles with multifocal lenses lies in the fact that the lenses must be suitably produced and then mounted on the frame, inevitably leading to a delay in their delivery to the person who has requested them.
  • the problem underlying the present invention is that of providing spectacles for presbyopic emmetropic persons which will remedy the drawbacks mentioned above with reference to the prior art cited.
  • - Figure 1 is a diagrammatic view of a pair of spectacles for presbyopic emmetropic persons, produced by a method according to the present invention
  • - Figure 2 is a diagrammatic view of a kit for the preparation of the spectacles of Figure 1
  • - Figure 3 is a diagrammatic view of a pair of test spectacles usable in the method according to the invention
  • - Figure 4 is a diagrammatic view of an assembly of spectacles similar to those shown in Figure 1.
  • the reference 1 indicates as a whole a pair of spectacles for presbyopic emmetropic persons, produced by a method according to the present invention.
  • presbyopia is understood in a general acceptance of "accommodative insufficiency", which may also have an origin of the functional type, determined by the type of stresses to which the eye is subjected.
  • accommodative insufficiency of this type may be a consequence of the stress arising from prolonged close vision, such as, for example, in the case of an activity which requires the continuous use of a video terminal.
  • the spectacles 1 comprise a frame 2 on which lenses 3 are coupled.
  • the frame 2 is made of metal or of plastics material, according to methods known per se in the field, and is configured in such a way as to be worn in a position close to the eyes of the user, differing in this respect from the frames used for "half- moon spectacles".
  • the lenses 3 are of the multifocal type and comprise a correction area 4, extending in a lower portion of the lens, starting from a lower edge 5 of the lens, up to a predefined height H.
  • the correction area 4 identified diagrammatically by dashed lines in Figure 1, has a positive dioptric power, suitable for the correction of presbyopia, while the whole of the remaining portion of the lens 3 has a substantially zero dioptric power.
  • the value of the height H of the correction area 4 is such that the gaze of a person wearing the spectacles 1 and in the primary gaze position, i.e. in an upright position looking straight ahead, passes through the uncorrected portion of the lenses
  • the correction area 4 is passed through by the gaze of the person wearing the spectacles 1 when turned downwards.
  • the distant vision is not affected by the positive dioptric power of the correction area 4, while by slightly lowering the gaze it is possible to take advantage of that dioptric power for close vision.
  • the value of the positive dioptric power within the correction area 4 may be constant or, in a greatly preferred manner, may vary at a transition zone 6, defined within the correction area 4 in proximity to the portion of the lens 3 having a substantially zero dioptric power.
  • the positive dioptric power varies starting from the predetermined value for the correction of presbyopia within the correction area 4 to a substantially zero value at the boundary of the correction area 4 with the portion of the lens 3 having a zero dioptric power.
  • the variation of the dioptric power within the transition zone 6 may follow any suitable course, for example a linear course.
  • the lenses 3 are mounted interchangeably on the frame 2, for example with a snap coupling, and are selected from an assembly of similar lenses, indicated in Figure 2 by 3a, 3b, 3c, all suitable for mounting on the frame 2.
  • the frame 2 and the lenses 3, 3a, 3b, 3c form a kit, indicated as a whole by 10, for the preparation of a pair of spectacles 1, according to the method of the present invention.
  • the pairs of lenses 3, 3a, 3b, 3c while having substantially identical dimensions which allow them to be mounted interchangeably on the frame 2, differ from one another in the positive dioptric power value with which the correction area 4 is provided and/or in the value of the height H of extension of the correction area 4.
  • the lenses 3b and 3c have heights Hi and H 2 , respectively lower and higher than H.
  • the number of pairs of lenses is four; however, it is clear that the number of pairs of lenses may be any whatever, so as to cover the greatest possible spectrum of values of dioptric power and values of height
  • the values of positive dioptric power are selected from a plurality of predefined discrete values, and preferably start from a minimum value of +0.50, increasing in steps from 0.50 diopters up to a maximum value, for example, +3.50.
  • the values for the height of the correction area 4 are selected from a plurality of predefined discrete values, and are preferably three in number, selected in such a way as to cover the majority of the physical shapes of the population.
  • the number of predefined values of positive dioptric power and of height of the correction area are such as to cover the requirements of as many of the population as possible, without however reaching an excessively high number of combinations which would render the production and management of the corresponding pairs of lenses uneconomic overall.
  • the spectacles of the present invention are moreover conveniently usable in cases of accommodative insufficiency resulting from prolonged stress in close vision, as described previously.
  • the kit 10 may conveniently comprise a pair of test spectacles 20, illustrated diagrammatically in Figure 3, comprising a frame 21, similar to the frame 2, on which is mounted a pair of lenses 22 provided with reference marks 23 useful for the selection of the correct value of height H, as described in more detail hereinafter.
  • the reference marks 23 may comprise a series of lines, substantially parallel to one another, extending so as to be substantially horizontal when the spectacles 20 are worn by a person in the primary gaze position. Each reference mark 23 corresponds to a predefined value of height H, Hi and Hi among those available in the kit 10.
  • the reference marks 23 may be formed, as well as by lines, by a plurality of bands which may conveniently be differently coloured in order to facilitate identification thereof, both by an expert and by the user himself.
  • the spectacles 1 are produced and made available to a presbyopic emmetropic person in the following ways.
  • the frame 2 like the lenses 3, 3a, 3b, 3c and all the other pairs of lenses that may be provided, are produced on an industrial scale so as to keep the cost of production at low levels.
  • the assembly of suitable lenses on the frame 2 is carried out, according to a first method, by a specialised person, typically an optician who, after measuring the degree of correction necessary for the person who requires spectacles 1, must select the height of the correction region 4 that is most suitable so that the person can enjoy correct vision, both distant and close.
  • a specialised person typically an optician who, after measuring the degree of correction necessary for the person who requires spectacles 1, must select the height of the correction region 4 that is most suitable so that the person can enjoy correct vision, both distant and close.
  • the other typical basic parameter for the making to measure of conventional multifocal lenses i.e. the distance between pupils
  • the selection of the most suitable value for height H may advantageously be made by means of the test spectacles 20. It is in fact sufficient to have the presbyopic emmetropic person put on the spectacles and to check with which reference mark 23 the pupils of the subject are aligned when in the primary gaze position.
  • the most suitable value of height H will be that corresponding to the reference mark 23 aligned with the pupils of the subject.
  • the optician will therefore select those having the correct values of height H and of dioptric power, and will couple them to the frame 2.
  • the spectacles 1 are assembled in the factory in such a way as to make directly available to a presbyopic emmetropic person an assembly 100 of pairs of spectacles, from which the person can select the pair most suited to his requirements.
  • the assembly 100 of pairs of spectacles comprises a series of pairs of spectacles 101, similar to the spectacles 1, all provided with an almost identical frame 2, on which are respectively mounted pairs of lenses 103 differing from one another only in the values for height of the correction region 4 and/or in the dioptric power values of the area itself, similarly to the lenses 3, 3a, 3b, 3c of the kit 10.
  • the assembly 100 of pairs of spectacles may further advantageously also comprise a pair of test spectacles 20 already described previously.
  • the correct height value will be that corresponding to the colour that can be seen by the subject when, wearing the test spectacles 20, he is in the primary gaze position.
  • the subject knowing his own level of presbyopia, is therefore capable of selecting for himself, from among the assembly 100, those spectacles which have mounted on them the pair of lenses most suited to his requirements.
  • the selection of the most suitable spectacles does not require the intervention of a specialised expert, so that the assembly 100 of pairs of spectacles may conveniently be made available to people on a conventional display, also in a large store.
  • the present invention therefore solves the problem mentioned above with reference to the prior art cited, inasmuch as there are made available, to presbyopic emmetropic persons, spectacles provided with multifocal lenses, wearable in proximity to the eyes and therefore more easily accepted by the market, at a relatively low cost, which is comparable to that of preassembled, fixed gradation spectacles such as, for example "half-moon spectacles".

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

L’invention concerne un procédé de préparation de lunettes (1) pour une personne emmétrope presbyte, comprenant les étapes : – de fourniture d’une monture (2), - de fourniture d’une pluralité de verres multifocaux (3, 3a à 3c), tous adaptés pour être montés sur la monture, et sur chacun desquels une aire de correction (4) est définie, s’étendant sur une partie inférieure du verre, démarrant à partir de l’un de ses bords inférieurs (5), jusqu'à une hauteur prédéfinie (H, H1, H2), chacun des verres ayant en outre un pouvoir dioptrique positif approprié pour corriger la presbytie dans l’aire de correction et un pouvoir dioptrique sensiblement nul à l’extérieur de cette dernière, les verres différant les uns des autres par rapport à la valeur du pouvoir dioptrique positif et/ou à la mesure de la hauteur (H) de l’extension de l’aire de correction, - de sélection à partir de la pluralité de verres multifocaux d’une paire de verres ayant un pouvoir dioptrique positif approprié pour corriger le degré de presbytie de la personne et ayant une mesure appropriée de la hauteur de l’aire de correction de sorte que, lorsque la personne met lesdites lunettes, ladite aire de correction soit située dans une zone de vision préférée pour une vision proche et n’est sensiblement pas impliquée dans une vision à distance, et – de couplage de la paire de verres à la monture afin d’obtenir les lunettes. Un nécessaire est également décrit pour la préparation de lunettes selon le procédé précédent, ainsi que les lunettes ainsi obtenues.
PCT/EP2008/061435 2008-02-18 2008-08-29 Procédé de préparation de lunettes pour personnes emmétropes presbytes, nécessaire pour la mise en œuvre du procédé, et lunettes ainsi obtenues Ceased WO2009103359A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD20080046 ITPD20080046A1 (it) 2008-02-18 2008-02-18 Metodo per la preparazione di occhiali per persone presbiti emmetropi, kit per l'attuazione di tale metodo ed occhiali cosi' ottenuti
ITPD2008A000046 2008-02-18

Publications (1)

Publication Number Publication Date
WO2009103359A1 true WO2009103359A1 (fr) 2009-08-27

Family

ID=40291795

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/061435 Ceased WO2009103359A1 (fr) 2008-02-18 2008-08-29 Procédé de préparation de lunettes pour personnes emmétropes presbytes, nécessaire pour la mise en œuvre du procédé, et lunettes ainsi obtenues

Country Status (2)

Country Link
IT (1) ITPD20080046A1 (fr)
WO (1) WO2009103359A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021161125A1 (fr) * 2020-02-16 2021-08-19 AddOn Optics Ltd. Détermination de conception optique de lentille progressive
US11378821B2 (en) 2019-09-26 2022-07-05 AddOn Optics Ltd. Progressive lens and method of manufacture thereof
US11719959B2 (en) 2014-05-11 2023-08-08 AddOn Optics Ltd. Optical element for converting a single-vision lens to a progressive lens
US12416820B2 (en) 2019-09-26 2025-09-16 AddOn Optics Ltd. Progressive lens and manufacture thereof
US12456612B2 (en) 2021-08-16 2025-10-28 AddOn Optics Ltd. Apparatus and methods for applying vacuum-plasma treatment

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981439A (en) * 1933-01-04 1934-11-20 Joseph W Smith Apparatus for determining the proper relation between the vision fields of multifocal ophthalmic lenses
GB1100148A (en) * 1966-04-19 1968-01-24 Rudolf Rodenstock Specifying bifocal lenses for spectacles
DE1622974A1 (de) * 1968-01-19 1971-01-07 Geo F Kaepernick Kg Brillenvorsetzer
US4988185A (en) * 1988-10-05 1991-01-29 Designs For Vision, Inc. High add bifocal spectacles and methods of prescribing
US5677751A (en) * 1994-07-11 1997-10-14 Gerber; Neil Decals for multifocals
WO1999001791A1 (fr) * 1997-07-02 1999-01-14 Rotlex (1994) Ltd. Procede et systeme d'ajustage de verres progressifs pour lunettes
EP0972488A1 (fr) * 1996-12-17 2000-01-19 Hoya Corporation Lentille d'essai en plastique, article moule par injection et appareil de moulage correspondant
US20030174282A1 (en) * 2002-03-18 2003-09-18 Takashi Itagaki Test tool for optometry

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981439A (en) * 1933-01-04 1934-11-20 Joseph W Smith Apparatus for determining the proper relation between the vision fields of multifocal ophthalmic lenses
GB1100148A (en) * 1966-04-19 1968-01-24 Rudolf Rodenstock Specifying bifocal lenses for spectacles
DE1622974A1 (de) * 1968-01-19 1971-01-07 Geo F Kaepernick Kg Brillenvorsetzer
US4988185A (en) * 1988-10-05 1991-01-29 Designs For Vision, Inc. High add bifocal spectacles and methods of prescribing
US5677751A (en) * 1994-07-11 1997-10-14 Gerber; Neil Decals for multifocals
EP0972488A1 (fr) * 1996-12-17 2000-01-19 Hoya Corporation Lentille d'essai en plastique, article moule par injection et appareil de moulage correspondant
WO1999001791A1 (fr) * 1997-07-02 1999-01-14 Rotlex (1994) Ltd. Procede et systeme d'ajustage de verres progressifs pour lunettes
US20030174282A1 (en) * 2002-03-18 2003-09-18 Takashi Itagaki Test tool for optometry

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11719959B2 (en) 2014-05-11 2023-08-08 AddOn Optics Ltd. Optical element for converting a single-vision lens to a progressive lens
US11378821B2 (en) 2019-09-26 2022-07-05 AddOn Optics Ltd. Progressive lens and method of manufacture thereof
US12416820B2 (en) 2019-09-26 2025-09-16 AddOn Optics Ltd. Progressive lens and manufacture thereof
WO2021161125A1 (fr) * 2020-02-16 2021-08-19 AddOn Optics Ltd. Détermination de conception optique de lentille progressive
US12456612B2 (en) 2021-08-16 2025-10-28 AddOn Optics Ltd. Apparatus and methods for applying vacuum-plasma treatment

Also Published As

Publication number Publication date
ITPD20080046A1 (it) 2009-08-19

Similar Documents

Publication Publication Date Title
US8356896B2 (en) Method for determining far and near reference points
KR101302857B1 (ko) 렌즈설계기준의 선택방법
US10838230B2 (en) Method for making a spectacle lens
EP2959339B1 (fr) Méthode de production d'une paire de verres ophtalmiques progressifs
CN107533240B (zh) 与配戴者相适配的眼镜、制造其的眼镜套件及相关方法
EP2342599B1 (fr) Procédé pour déterminer l'inclinaison dans une lentille de lunettes progressive
JP6845795B2 (ja) 装用者に適合された光学レンズのレンズ設計を決定する方法
CN102483527B (zh) 根据模糊认知感制造定制的眼镜片
CN102016693A (zh) 生产新型渐进眼镜片的方法
US8646909B2 (en) Method for determining, optimizing and producing an ophthalmic lens and set of ophthalmic lenses
WO2009103359A1 (fr) Procédé de préparation de lunettes pour personnes emmétropes presbytes, nécessaire pour la mise en œuvre du procédé, et lunettes ainsi obtenues
Meyler et al. Presbyopia
CN102171601A (zh) 多焦镜片的拟合方法
WO2023104988A1 (fr) Système et procédé de détermination d'une solution de contrôle de la myopie
CN105074541B (zh) 眼镜镜片及其制造方法以及镜片供给系统
CN109661607B (zh) 用于确定个体的个性化视觉补偿渐变眼科装置的方法
US8333471B2 (en) Series of progressive ophthalmic lenses
WO2009103358A1 (fr) Lunettes pour personnes emmétropes presbytes
CN103969849A (zh) 一种可以降低眼睛屈光度的方法及眼镜
US20250231424A1 (en) Aspherical ophthalmic lens
US4573776A (en) Biconvex aphakic prosthetic lens
Opportunity et al. Presbyopic fits to presbyopes

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08803422

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08803422

Country of ref document: EP

Kind code of ref document: A1