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

Claim 8:
9. A method of forming an ophthalmic contact lens, comprising:
providing a solution comprising polyethylene glycol dimethacrylate, 2-hydroxyethyl methacrylate (HEMA), and 2,2-dimethoxy-2-phenylacetophenone;
forming a first mixture of the solution and a first carboxytetramethylrhodamine dye having a concentration in the range of 0.000015% to 0.00003% by weight configured to absorb at least 50% of incident light in a spectral band selected from a list consisting of 550 nanometers to 580 nanometers and 550 nanometers to 580 nanometers;
pouring the first mixture into a mold; and
curing the first mixture by exposure to ultraviolet light.