Patent ID: 11899289
Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Other special machines (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. An ophthalmic contact lens, comprising:
a tinted region containing at least one selected from a list consisting of a first carboxytetramethylrhodamine dye having a concentration in the range of 0.000015% to 0.00003% by weight and configured to absorb at least 50% of incident light in a spectral band between 480 nanometers to 500 nanometers and a second carboxytetramethyl-rhodamine dye having a concentration in the range of in the range of 0.000015% to 0.00003% by weight and configured to absorb at least 50% of incident light in a spectral band between 550 nanometers to 580 nanometers.