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

Claim 16:
17. A process of forming an ophthalmic contact lens, comprising:
providing a first liquid resin solution;
forming the contact lens from the first liquid resin solution using a 3D printing process and curing the first liquid resin solution by exposure to ultraviolet light;
dipping the contact lens formed by the 3D printing process into a second liquid resin solution;
adding a first carboxytetramethylrhodamine dye having a concentration in the range of in the range of 0.000015% to 0.00003% by weight configured to absorb at least 50% of incident light in a spectral band between 480 nanometers to 500 nanometers or a second carboxytetramethylrhodamine dye having a concentration in the range of in the range of 0.000015% to 0.00003% by weight configured to absorb at least 50% of incident light in a spectral band between 550 nanometers to 580 nanometers to the first or second liquid resin; and
curing the second liquid resin solution by exposure to ultraviolet light.