Patent ID: 7780879

Claim:
A method for producing a contact lens, comprising: the steps of: (1) introducing a fluid composition into a mold for making a contact lens, wherein the fluid composition comprises a lens-forming material and a PEG-ylated phosphatidyl ethanolamines, wherein the lens-forming material is crosslinkable and/or polymerizable by actinic radiation or by heating; (2) crosslinking/polymerizing the lens-forming material in the mold to form a lens having a polymer matrix, wherein at least part of the PEG-ylated phosphatidyl ethanolamines migrates to the interface between the mold and the polymer matrix of the formed lens; and (3) separating the mold, wherein the PEG-ylated phosphatidyl ethanolamines is present in an amount sufficient to reduce an averaged mold separation force by at least about 40% in comparison with that without the PEG-ylated phosphatidyl ethanolamines.