Contact lenses with improved wearing comfort

Details Contact lenses with improved wearing comfort Contact lenses with improved wearing comfort

2005-10-05

2011-10-04

Wu, David W (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C522S084000, C522S085000, C522S086000, C522S152000, C522S154000, C525S056000, C525S057000, C525S058000, C525S059000, C525S061000

Reexamination Certificate

active

08030369

ABSTRACT:
The invention relates to a biomedical molding, in particular a contact lens, which is obtainable by crosslinking, in a mold, an aqueous solution of a crosslinkable polyvinyl alcohol (PVA) prepolymer comprising at least 0.5 weight-%, based on the entire formulation, of a non-reactive PVA, wherein the number-average molecular weight of the non-reactive PVA is higher than that of the crosslinkable PVA. A contact lens of the invention has an improved wearing comfort.

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European Standard Search Report.

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