Improved tinted contact lens and method of making the same

Details Improved tinted contact lens and method of making the same Improved tinted contact lens and method of making the same

G - Physics

02

B

8/3, 88/40

G02B 1/12 (2006.01) C07C 211/64 (2006.01) C07C 245/22 (2006.01) D06P 1/00 (2006.01) D06P 1/66 (2006.01) D06P 3/00 (2006.01) G02C 7/02 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2011946

V-17493/+/CGV 1407 Improved tinted contact lens and method of making the same Abstract of the Disclosure An improvement in a process for preparing a contact lens tinted over at least a portion of its surface, having the steps of forming a tinting solution having a reactive dyestuff and applying the tinting solution to a polymeric hydrogel contact lens material, wherein the improvement comprises adding an effective amount of an ammonium quaternary salt to the tinting solution before the applying step.

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