Intraocular lens for cataract surgery
The meniscus-shaped intraocular lens design addresses the issue of entoptic phenomena by positioning the IOL edge out of the path of peripheral light rays, significantly reducing visual disturbances and improving vision in cataract patients.
WO2025104362A1 Publication Date: 2025-05-22VOPTICA
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Patent Information
- Application Number
- PCT/ES2024/070707
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-11-14
- Filing Date
- 2024-11-14
- Publication Date
- 2025-05-22
AI Technical Summary
Technical Problem
Existing intraocular lenses (IOLs) for cataract surgery often cause entoptic phenomena such as positive and negative dysphotopsias due to their limited diameter, which can lead to visual disturbances under peripheral lighting conditions.
Method used
The design of an intraocular lens with a meniscus shape, featuring a concave anterior surface and a convex posterior surface, with a shape factor between -1 and -2, to position the edge of the IOL out of the path of peripheral light rays, thereby reducing or eliminating dysphotopsia.
Benefits of technology
This innovative IOL design effectively minimizes or eliminates entoptic phenomena, improving visual quality and reducing visual disturbances in cataract patients by positioning the IOL edge away from peripheral light paths.
✦ Generated by Eureka AI based on patent content.
Abstract
Intraocular lens for cataract surgery, comprising an anterior surface and a posterior surface, such that they form a meniscus with the anterior surface being concave and the posterior surface being convex, wherein: the shape factor is between -1 and -2, the anterior surface has a conic constant between 5 and 50, and the posterior surface has a conic constant between -5 and -2. This design of the intraocular lens for cataract surgery of the invention minimizes or even eliminate the occurrence of the entoptic phenomena caused by peripheral light sources after cataract surgery.
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