Intraocular lens preventing posterior capsular opcaification and glare and preparation method thereof

Abstract

The invention relates to the technical field of intraocular lenses, and provides an intraocular lens preventing posterior capsular opcaification and glare and a preparation method thereof. The intraocular lens has a special edge structure and a frosted side face, by means of the special edge structure, the phenomenon that lens epithelial cells grow along the rear surface of an optical region can be reduced, and then the after cataract occurrence rate is lowered; by means of the frosted side face, the occurrence rate of glare occurring after the intraocular lens is implanted in an eye can be greatly lowered.

Description

technical field [0001] The invention relates to the field of artificial lens technology, in particular to an artificial lens capable of preventing posterior capsule turbidity and glare and a preparation method thereof. Background technique [0002] At present, the method of preparing IOL mainly adopts the following steps: firstly, the optical zone profile and the mechanical zone profile on both sides of the IOL are prepared by turning, milling or laser cutting with the blank as the crystal blank, and the artificial lens is obtained. The crude crystal is then polished to remove turning marks, drilling and milling burrs, or laser-cut sputtering spots, etc., so as to obtain an artificial lens with a clean surface. The polishing operation is to mix the crude IOL with polishing particles, powder or surfactant and put it in a container, and use rotation, vibration, etc. to promote the friction between the IOL and the polishing particles, thereby removing turning lines and surface ...

AI Technical Summary

Problems solved by technology

[0003] However, in the current method of preparing intraocular lenses, when the crystal is processed into the final shape and size, the edge structure and side profile of the IOL are polished without protection, which easily leads to wear of the edge structure and side profile , cannot keep the edge of the optical back surface sharp, and damage the rough effect of the side of the IOL

In this regard, U.S. Patent US20030176918A1 proposes a device and a polishing method for protecting the geometry of the edge of the artificial crystal during the polishing process, but the method is relatively complicated and has low practicability

[0004] One of the many potential problems after IOL implantation is posterior capsule opacification (PCO), in which residual lens epithelial cells proliferate within the capsular bag and migrate to the optical posterior or anterior surface of the IOL, resulting in poor implantability. The intraocular lens becomes blurred, which seriously affects the patient's vision

[0005] Another potential problem with IOL implantation is the glare caused by the light reflection of the IOL, especially the glare caused by the edge of the IOL, which leads to a decrease in the patient's visual effect and may even lead to implantation and replacement of the IOL

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