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a corneal contact lens

A technology for contact lenses and contact lenses, applied in glasses/goggles, optical components, instruments, etc., can solve the problem that the consistency of pupil and optical center is not as good as that of contact lenses, and achieve the effect of reducing collective strength and reducing visual fatigue.

Active Publication Date: 2019-09-03
广州京德嘉润视觉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, frame lenses are far inferior to contact lenses in addressing the alignment of the pupil with the optical center

Method used

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  • a corneal contact lens

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Embodiment 1

[0017] combine figure 1 , the optical zones of the concave surface S1 and the convex surface S2 of soft contact lenses, rigid gas-permeable contact lenses, soft-rigid contact lenses, and scleral lenses are designed to be spherical or aspherical, and the center of the concave optical zone is the center point C1 The extension line of the line connecting the center O of the concave surface intersects the optical zone of the convex surface at C2, and the thickness of the lens at the same radius around C1 is not equal, the purpose is to form a prism effect.

[0018] The thickness of the lens is inconsistent at the same radius in the center of the concave optical zone, creating a prismatic effect.

[0019] The concave surface refers to the arc surface of which EF is a spherical surface, namely S1; the convex surface refers to the arc surface of which AB is a spherical surface, namely S2.

[0020] AB is the length of a chord on S2, and EF is the length of a chord on S1. If it is no...

Embodiment 2

[0023] The included angle between AB and EF ranges from 0.5° to 35°, and the included angle range is intended to illustrate that the structure of the contact lens can have a wider application range.

Embodiment 3

[0025] The thickness of the lens at the same radius around C1 is from 0.08 mm to 1.20 mm, which is intended to illustrate that the structure of the contact lens can have a wider application range.

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Abstract

The invention discloses a corneal contact lens. The corneal contact lens has the advantages that due to the fact that the optical areas of a concave face S1 and a convex face S2 are designed into spherical faces or non-spherical faces, the extension line of the connecting line between the central point C1 of the concave face optical area and the circle center O of the concave face and the convex face optical area intersect at C2, the lens thicken around the same radius position of C1 is unequal, the extension line of OE intersects with S2 at A, the extension line of OF intersects with S2 at B,and AB and EF forms an included angle to form a prism effect, convergence intensity of eye balls when the eyes look at near objects can be reduced, and problems such as visual fatigue caused by the convergence intensity increasing can be reduced.

Description

technical field [0001] The invention relates to the technical field of corneal contact lenses, in particular to a corneal contact lens. Background technique [0002] With the development of science and technology, people's demand for close-up is increasing, and the visual problems such as eye fatigue caused by this are becoming more and more serious. When looking close, the human eyeballs gather inward under the action of eye muscles. Over time, it will cause visual fatigue and cause a series of problems. The present invention intends to refract the light that enters the eyeball through the lens outwards, so that the eyes do not need to gather excessively inward when looking close. At present, someone has implemented this idea on the frame mirror. However, frame lenses are far inferior to contact lenses in addressing the alignment of the pupil with the optical center. Since the contact lens is attached to the surface of the cornea, there is no question of whether the ref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02C7/04
Inventor 陈迪生
Owner 广州京德嘉润视觉科技有限公司