Corneal shaping lens

A technology of orthokeratology lenses and corneas, applied in glasses/goggles, optics, instruments, etc.
CN107728338APending Publication Date: 2018-02-23EYEBRIGHT MEDICAL TECH BEIJING
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
EYEBRIGHT MEDICAL TECH BEIJING
Publication Date
2018-02-23

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Abstract

The invention relates to a corneal shaping lens. The corneal shaping lens comprises an inner surface facing the human cornea during wearing and an outer surface opposite to the inner surface, whereinthe inner surface comprises a base curve area located in the center, the base curve area is used for pressing the front surface of the cornea and shaping the front surface of the cornea to be consistent with the base curve area and comprises two or more areas, and the at least two of the areas have different curvature radii.
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Description

technical field

[0001] The present invention relates to orthokeratology lenses, and more particularly to orthokeratology lenses having more than one radius of curvature in the base arc region. Background technique

[0002] Presbyopia is a visual problem that will inevitably appear after people enter middle age and old age. As the age increases, the ability of the eye to adjust gradually declines, which causes the patient to have difficulty seeing near, so that in close work, a convex lens must be added to the static refraction correction to have clear near vision. This phenomenon is called presbyopia. With the improvement of modern people's living standards, especially when women who love beauty reach middle age, their requirements for image are increasing day by day. It's getting serious. At present, presbyopia is mainly solved by wearing presbyopic glasses, surgery, and wearing multifocal contact lenses. There are problems in the convenience, correction effect, and corr...

Claims

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