Non-meridian asymmetric orthokeratology lens
By employing an asymmetrical curvature design in the positioning arc area of the orthokeratology lens, the problem of existing lenses being unable to adapt to asymmetrical corneal astigmatism is solved, achieving better lens fit and correction effect, and making it suitable for personalized customization for different patients.
CN223842255UActive Publication Date: 2026-01-27陆卫波
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Patent Information
- Application Number
- CN202520419874.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Technical Problem
Existing orthokeratology lenses with toroidal designs cannot effectively adapt to the asymmetric corneal astigmatism of most people's eyes, resulting in lens deviation and unsatisfactory correction effects.
Method used
Orthokeratology lenses with a non-meridian asymmetric curvature design create four distinct regions—the first, second, third, and fourth—by setting four dividing lines in the positioning arc area. By controlling the angle and curvature distribution of these oblique lines, the lens fits the cornea more closely.
Benefits of technology
It improves the fit between the lens and the cornea, reduces lens misalignment, enhances the corrective effect and safety of use, and is suitable for personalized customization for different patients.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a non-meridian asymmetric orthokeratology lens, which relates to the field of orthokeratology lens design, and adopts the technical scheme that the non-meridian asymmetric orthokeratology lens comprises a circular arc sheet-shaped lens body, and the lens body comprises a base arc area, a reverse arc area, a positioning arc area and a side arc area which are integrally formed from inside to outside, the positioning arc area is divided into a first area, a second area, a third area and a fourth area by four area dividing lines, the intersection point of the four area dividing lines is located at the circle center of the base arc area, and the four area dividing lines comprise at least two meridian lines and at least one oblique crossing line. Due to the fact that the oblique intersecting lines are arranged, the areas of the first area, the second area, the third area and the fourth area are different, namely the areas are in the non-equal division state, the problem that asymmetric corneal astigmatism exists in the corneas of most people can be solved, the lens can be better matched with the cornea of a patient, the lens deviation symptom is avoided, and the lens can be used for improving the lens quality. The teenager vision correction effect is improved.
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