RU2281064C1 - Artificial crystalline lens with weighed intraocular change in focal power - Google Patents

Abstract

FIELD: ophthalmologic surgery.

SUBSTANCE: artificial crystalline lens with weighed intraocular change in focal power has optical and haptic parts. Crystalline lens is made of parts for intraocular weighed change in focal power corresponding to changes in refraction due to fact that haptic part is made of two mutually connected parts. First part is made in form of external ring inside which ring there are at least two arc-shaped protrusions. There are through holes in centers of all protrusion. Any protrusion interacts with one arc-shaped member of second haptic part. Second part of haptic part has optical part of artificial crystalline lens. Main plane of optical part is disposed lower than plane of haptic part.

EFFECT: reduced traumatism of weighed intraocular correction of myopia, hypermetropia, anisometropia and induced ametropia.

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Description

The invention relates to medicine, more specifically to ophthalmology, and can be used to correct ametropia by intraocular changes in the optical power of the artificial lens of the eye (IHG).

The closest analogue is the well-known IHG with an intraocular change in optical power (US 6849091 B1, 02/01/2005), made of a composite of the optical and haptic parts.

However, when changing the optical part of this IHG, trauma to the surrounding tissue is possible.

The technical result according to the invention is to reduce trauma during intraocular correction through the use of composite IHG and simplify the change of the optical part.

The technical result according to the invention is achieved by the fact that in an IHG with an intraocular change in optical power made up of optical and haptic chathies, the haptic part consists of an outer ring, inside which there are at least two arched protrusions, in the center of each of which is made one through hole for interaction with one of the supporting arcuate elements with the possibility of mounting the optical part, while the main plane of the optical part is located below the plane of the haptic some parts.

The invention is illustrated by the drawings shown in figures 1-2.

Figure 1 is a top view of the IHG.

Figure 2 is a fragment of the mounting of the optical part.

Figure 1 shows the IHG with an intraocular change in optical power; contains an optical part 1 and a haptic part 2, which consists of an outer ring 3, inside of which there are at least two arched protrusions 4, 5, in the center of each of which one through hole 6, 7 is made, and the optical part 1 contains supporting arcuate elements 8, 9.

Figure 2 shows a fragment of the fastening of the optical part 1 to the haptic part 2. The intraocular change in the optical power is carried out by changing the optical part 1 and installing a new one with the necessary optical power.

For intraocular correction of myopia, the optical part 1 is removed and replaced with a lens of lower optical power.

For intraocular correction of hyperopia, replace the optical part 1 with a lens with a greater optical power.

For intraocular correction of anisometropia, either reduce the refraction of the eye by replacing the optical part 1 with a lens of lower optical power, or increase the refraction of the eye by replacing the lens with a higher optical power.

For intraocular correction of induced anisometropia, either reduce / increase eye refraction through the actions described above, or perform these actions in accordance with changes in refraction in the paired eye, or, with bilateral implantation, perform coordinated actions for intraocular correction in both eyes.

The implantation of IHG is as follows. After phacoemulsification, the anterior chamber and capsule bag are filled with viscoelastic. Through a tunnel incision using, for example, an injector, the haptic part 2 of the IHG is introduced into the capsule bag. Then, also using the injector, the optical part 1 of the IHG is introduced into the capsule bag. In this case, the supporting arcuate elements 8, 9 are respectively inserted into the through holes 6, 7, thus fixing the optical part 1. The front chamber is washed with a BSS solution, a solution of Acetylcholine 0.01% is introduced. Seal operational access.

Work with IHG according to the invention in the postoperative period is as follows. Through the performed paracentesis of the cornea, 1% Mesaton solution is injected into the anterior chamber to achieve maximum mydriasis. The anterior chamber is filled with viscoelastic. A special tool (not shown in Fig.), The optical part 1 is removed from the outer ring 3 of the haptic part 2 and removed from the anterior chamber through the surgical incision. Through the same surgical incision using, for example, an injector, the optical part 1 of the required strength is introduced into the front chamber and then placed in the ring 3, leading the supporting arcuate elements 8, 9 into the through holes 6, 7 of the haptic part 2, respectively. The front chamber is washed with BSS- solution, inject a solution of Acetylcholine 0.01%. Seal the surgical incision.

The need for a metered intraocular change in the optical power of ICH arises in situations where it is difficult to predict the final parameters of the eye, a high probability of induced ametropia, or a planned change in clinical refraction in the postoperative period is necessary. This need arises with a dynamic change in the optical parameters of the eye (for example, intraocular correction in childhood, since the natural growth of the eye lasts on average 10 years or more), with intraocular correction against the background of a forced change in the refractive power of optical media, for example, due to the introduction for an indefinite period of time into the vitreous cavity of vitreous fluids.

ICH with a dosed intraocular change in optical power should be implanted through the incision used for phacoemulsification, fixed in a capsule bag, take a stable position, a change in optical power should be accompanied by minimal trauma, a change in optical power should be predictable and dosed, a change in optical power should not be accompanied by risk the development of complications encountered with intraocular correction (pupil block, IOL displacement, etc.).

Claims (1)

An artificial lens of the eye with an intraocular change in optical power, made up of a combination of optical and haptic parts, characterized in that the haptic part consists of an outer ring, inside which there are at least two arched protrusions, in the center of each of which there is one through hole to interact with one of the supporting arcuate elements with the possibility of attaching the optical part, while the main plane of the optical part is located below the plane of the haptic part.

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