Double-optical-part intraocular lens suite and application thereof

Abstract

The invention provides a double-optical-part intraocular lens suite and an application thereof. The double-optical-part intraocular lens suite comprises a main crystal and an additional crystal; the main crystal includes a first optical part, a positioning part and a loop part, the loop part is arranged on the periphery of the outer edge of the first optical part and connected with the first optical part, and the positioning part is arranged on the first optical part and / or the loop part; the additional crystal includes a second optical part corresponding to the first optical part and a connecting part corresponding to the positioning part, wherein the connecting part is connected with the second optical part, and the connecting part is detachably connected with the positioning part. The double-optical-part intraocular lens suite adopts the structure that the main crystal and the additional crystal are detachably connected in a matched way to effectively carry out diopter correction. In addition, due to the requirement of staged treatment, the main crystal and the replaceable additional crystal can be implanted sequentially, so that multiple repeated surgical operations become safer, simpler and more convenient.

Description

technical field [0001] The invention relates to the technical field of intraocular lenses, in particular to an intraocular lens kit with dual optics and its application. Background technique [0002] At present, cataract is the most blinding eye disease with the highest incidence worldwide. The main method for treating cataract is phacoemulsification combined with intraocular lens implantation. The procedure usually requires removal of a portion of the central anterior capsule of the lens approximately 5.5 mm (e.g., manual avulsion or femtosecond laser-assisted resection to create a circular anterior capsule opening with a diameter of 5.5 mm), phacoemulsification to completely remove the nuclei of the opaque lens and The lens cortex was aspirated while preserving the intact posterior capsule, and then the intraocular lens was implanted into the lens capsular bag. [0003] The conventionally designed intraocular lens structure includes: a central optical part (a circle of ab...

AI Technical Summary

Problems solved by technology

[0004] However, after cataract extraction combined with intraocular lens implantation, there are a considerable number of patients with residual partial refractive error (such as myopia, hyperopia, astigmatism) or nearsightedness. Sexual astigmatism, implanted intraocular lens without corrective astigmatism design, non-multifocal design, etc.

The existing solutions include: (1) Correction by wearing glasses, but the glasses will bring inconvenience to the life of the patient; (2) Replacement of the intraocular lens, but there are problems of complicated operation and serious eye damage. 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 for correction Follow-up correction (such as piggyback intraocular lens implantation), but the existing conventional intraocular lens is a haptic part extending outwards with a total length of about 12 mm except for the optical part of about 6 mm in the center, which is prone to occur due to the lens haptic Complications of iritis and high intraocular pressure induced by stimulating the iris, there is also the problem that the crystal position in the ciliary sulcus is difficult to maintain stable and centered

In addition, after some multifocal intraocular lens implantation, if the patient has discomfort symptoms such as glare, the intraocular lens needs to be removed and replaced with a new one, which is likely to cause serious eye damage and excessive economic losses

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