Artificial crystalline lens with graduated intraocular change in focal power

FIELD: ophthalmology; surgery.

SUBSTANCE: artificial crystalline lens has haptic and optic parts; the lens is made of components. Haptic part is made of two combined parts. First pat is made in form of external ring. There are at least three arc-shaped additional rings inside the ring. Any open ring is made for interaction with one arc-shaped member of second part of haptic part. Moreover, second part of haptic part is connected with optical part of artificial crystalline lens.

EFFECT: widened range of technical aids, namely, designs of artificial crystalline lenses.

1 dwg

 

The invention relates to the field of ophthalmic surgery.

Known artificial lens of the eye by A.S. No. 1697788 from 26.12.1986,, MKI A 61 F 2/16.

Artificial eye lens includes an optical portion and located diametrically symmetrical closed the supporting elements in the form of curvilinear figures, while the supporting elements are in the plane of symmetry of the optical part of the hinge of the first order.

However, the above design has significant drawbacks: it does not allow dosed intraocular correction of myopia, hypermetropia, anisometropia and induced ametropia after implantation.

The technical problem solved by the invention, dosed intraocular correction of myopia, hypermetropia, anisometropia and induced ametropia.

The specified technical task is solved in that the artificial lens of the eye dosed with intraocular change in optical power, containing the haptic and the optical part made integral with the possibility of intraocular measured change of the optical power in accordance with the changes in the refraction by the fact that the haptic part is made of a compound consists of two interrelated parts, the first made in the form of the outer ring, inside of which there is at least three arcuate Supplement is lnyh unlinked rings, each of which cooperates with one of the arcuate support elements of the second portion of the haptic portion, the second portion of the haptic portion is connected to the optical part of the artificial eye lens.

The proposed invention is illustrated in the drawing, which shows a top view of ichg.

Artificial eye lens dosed with intraocular change the optical power contains a haptic and the optical part 1 is made integral with the possibility of intraocular measured change of the optical power in accordance with changes in refraction. Haptic part is made of a compound consists of two interrelated parts: the first part 2 is made in the form of the outer ring, inside of which there is at least three arcuate additional unlinked rings 3, each of which cooperates with one of the arcuate support elements of the second part 4 of the haptic part, while the second part 4 of the haptic part is connected with the optical part 1 artificial lens in the eye.

Intraocular correction of the optical power is carried out by extracting the installed optical part 1 and install the new with the required optical power.

Dosed intraocular correction of the optical power is carried out as follows. For intraocular correction of myopia remove the optical part 3 and replace it on the lens less optical power.

For intraocular correction of hyperopia replace the optical part 1 on the lens with higher optical power.

For intraocular correction of anisometropia or reduce the refraction of the eye by replacing the optical part 1, the lens less optical power, or increase the refractive power of the eye by replacing the insert higher optical power.

For intraocular correction of induced anisometropia or reduce/increase the refractive power of the eye through the above steps, or perform these actions in concert with changes in refraction in the fellow eye, or with bilateral implantation perform concerted actions on intraocular correction in both eyes.

Implantation IHG as follows. After phacoemulsification surgery anterior chamber and capsular bag is filled with viscoelastic. Through the tunnel incision with the injector or in the folded state of the haptic part IHG is introduced into the front chamber, the capsular bag, entered the outer ring (1). Then also using injector or folded in front of the camera introduces optical part IHG. Assembly IHG is intraocular. Front camera washed with BSS solution, is introduced a solution of Acetylcholine at 0.01%. Being sealed operational shortcuts the PA.

Proposed IHG works as follows. The attachment of the optical part 1 in the haptic part, formed by the elements 2, 3, 4, enables, if necessary, to extract implantirovannoi optical part to replace the lens with different optical power.

The optical power of the replaceable optical part is calculated according to mathematical relationships based on the value of the required dosage of the intraocular correction.

Working with IHG as follows. In the postoperative period, if necessary dosed intra-ocular changes the optical power IHG performed through a corneal paracentesis into the anterior chamber is entered solution Mezatona 1% for maximum mydriasis. Anterior chamber is filled with viscoelastic. Special tool (not included) optical part is derived from the inner ring and is removed from the anterior chamber through a surgical incision. Through the same operational access using injector or in the folded state in the case of the flexible material of the optical part of the optical power injected into the anterior chamber and then placed in the inner ring. Front camera washed with BSS solution, is introduced a solution of Acetylcholine at 0.01%. Being sealed surgical approach.

The necessity of dozirovanno the m intraocular change the optical power IgG occurs in situations when it is difficult to forecast the final parameters of the eye, a high probability induced ametropia or you plan to change clinical refraction in the postoperative period. This need occurs when a dynamic change of the optical parameters of the eye (e.g., intraocular correction in childhood as a natural eye growth in average lasts up to 10 years or more of age), when the intraocular correction on the background of an involuntary change the refractive power of the optical media, for example, due to the introduction for an indefinite period in the vitreal cavity replacing the vitreous body fluids, in the case of cataract extraction and implantation IgG with high myopia, when the true definition of the length of the eye is difficult due to the possible presence of stafilos sclera, in the case of the state of the eye after refractive surgery, when it is difficult to obtain standardized values of the refraction of the cornea, with a temporary ametropias refraction to correct anisometropia, as, for example, in the case of intraocular correction in one eye when the original bilateral ametropia one degree until needed intraocular correction in the fellow eye.

IHG dosed with intraocular change the optical power must implant in order to focus through the incision, used for phacoemulsification surgery, be fixed in the capsular bag, to take a stable position, the change in the optical power must be accompanied by minimal trauma, changing the optical power must be predicted and measured, the variation of the optical power shall be accompanied by a risk of complications that can occur after intraocular correction (pupillary block, the displacement of the IOL and others).

The artificial lens of the eye, containing the haptic and the optical part, characterized in that it is made of a composite, while the haptic part consists of two interrelated parts, the first made in the form of the outer ring, inside of which there are at least three arcuate additional unlinked rings, each of which is arranged to communicate with one of the arcuate support elements of the second portion of the haptic portion, the second portion of the haptic portion is connected to the optical part of the artificial eye lens.



 

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