Additional correction type intraocular lens and application thereof

Abstract

The invention provides an additional correction type intraocular lens and application thereof. The additional correction type intraocular lens comprises an optical part and a fixing assembly used forpositioning the optical part; the fixing assembly is a clamping part which comprises a connecting part and a bayonet part which is arranged on the connecting part, and the connecting part is distributed on the periphery of the optical part and connected with the optical part; or, the fixing assembly is a holding part, and the holding part comprises a front wing and a rear wing; the front wing is distributed on the periphery of the optical part and connected with the optical part, and the rear wing is connected with the inner surface of the optical part, so that the front wing and the rear wingform a wing-like bayonet structure; or, the holding part comprises a U-shaped groove and a connecting rod; one end of the connecting rod is connected with the U-shaped groove, and the other end of the connecting rod is connected with the optical part; an opening of the U-shaped groove is in the radial direction of the optical part or in the direction away from the optical part. According to the additional correction type intraocular lens and the application thereof, the fixing assembly assists the lens in keeping stable, and therefore, ametropia or difficulties in near vision remaining afterintraocular lens implantation are additionally corrected.

Description

technical field [0001] The invention relates to the technical field of intraocular lenses, in particular to an additional correction type intraocular lens and its application. Background technique [0002] The conventionally designed intraocular lens structure includes: the central optical part (about 6mm circle) that acts as a refractive lens, and the surrounding haptics that play a role in support (mostly designed symmetrically on both sides, with a total length of about 12mm, C-type L-type or Flat type), after implanted into the lens capsular bag, the haptic part with certain elasticity supports the peripheral part of the capsular bag, so as to ensure the centering and stability of the optical part in the capsular bag. [0003] At present, after cataract extraction combined with intraocular lens implantation, there are quite a few patients with residual partial refractive errors (such as myopia, hyperopia, astigmatism) or difficulty in seeing near. Sexual astigmatism, im...

AI Technical Summary

Problems solved by technology

Existing common solutions include: (1) correcting by wearing glasses, but the glasses will bring inconvenience to the life of the patient; (2) replacing the intraocular lens, but there are problems of complicated operation and serious eye damage, The patient is difficult to accept; (3) Excimer laser surgery is used to cut the cornea for correction, but this operation is irreversible, and some patients' refractive status will exceed the range of laser correction; (4) Another conventional intraocular lens is implanted in the ciliary sulcus Perform follow-up correction (such as piggyback intraocular lens implantation), but the existing conventional intraocular lens is a haptic part with a total length of about 12mm extending outward except for the optical part of about 6mm in the center, which is prone to occur due to crystal haptic Iritis and high intraocular pressure complications induced by external stimulation of the iris, and there is also the problem that the crystal position in the ciliary sulcus is difficult to maintain stable and centered

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