Patent ID: 11867985
Assignee: LARGAN MEDICAL CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A contact lens, comprising:
a central region comprising a central point of the contact lens;
an annular region symmetrically surrounding the central region; and
a peripheral region symmetrically surrounding the annular region;
wherein the annular region comprises one high power of critical point, the peripheral region comprises at least one light blocking ring, a minimum average transmittance for visible light of the light blocking ring is less than 50%, a maximum diameter of the central region is DiC, a maximum diopter of the annular region is PPmax, a diopter of the central region is POWC, and the following conditions are satisfied:

2.0 mm≤DiC;

4.0D≤P max; and

−8.00D≤POWC≤−0.25D.