Sclera contact lens matching method

Abstract

The invention provides a sclera contact lens matching method. A sclera contact lens comprises a convex outer surface and a concave inner surface, the inner surface is provided with a central area for correcting vision, a transition area arranged on the periphery of the central area and a landing area arranged on the periphery of the transition area, and the landing area is provided with a contact part used for making contact with a sclera. And the landing area comprises a limbal landing area not in contact with the cornea and a sclera landing area in contact with the sclera through the contact part, the lens matching method comprises the following steps: determining the diameter of the sclera contact lens; measuring the sagittal depth of the eyeball; obtaining the rise of the sclera contact lens based on the rise of the eyeball, wherein the rise of the contact part is linearly decreased from inside to outside; and preparing the sclera contact lens according to the rise of the sclera contact lens. According to the sclera contact lens matching method, the sclera contact lens can be well matched with the sclera, and the pressure borne by the sclera can be evenly dispersed.

Description

[0001] This application is filed on July 22, 2020 , the application number is 202010712536.1 , the name of the invention is sclera Mirrors and their dispensing methods divisional application of the patent application. technical field [0002] The disclosure relates to a method for dispensing scleral contact lenses. Background technique [0003] Contact lenses can correct the refractive error of the eyeball. The commonly used hard contact lenses are directly in contact with the cornea and worn on the cornea. However, since the cornea is rich in sensory nerve cells and is a relatively sensitive part of the human body, wearing a hard contact lens directly on the cornea can easily cause foreign body sensation or other symptoms of incompatibility, and these symptoms are very important for people with corneal diseases ( For example, patients with keratoconus, dry eye, etc. will be more serious. In addition, for patients with abnormal corneal refractive error, it is difficul...

AI Technical Summary

Problems solved by technology

[0005] However, most of the existing scleral lenses have an arch-bridge landing on the sclera, which can easily lead to uneven contact between the scleral lens and the sclera, resulting in uneven contact pressure on the sclera, and the scleral lens itself is relatively thick, which can easily lead to conjunctival staining and other complications. Symptoms

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