Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1978-06-05
1980-08-12
Corbin, John K.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351160H, G02C 704
Patent
active
042170389
ABSTRACT:
A glass coated, flexible, hydrophilic polymeric contact lens having a sufficient amount of oxygen transportability to meet the requirements of the human cornea is disclosed. In addition, this glass coated contact lens is wettable, fillerless, hydrolytically stable, biologically inert, transparent, resilient and soft. The glass coating is substantially colorless, transparent and from about 100 to about 8,000 angstroms thick. The glass may be a silicate glass, a phosphate glass or a germanate glass or mixtures thereof. The contact lens substrate comprises a polymer comprising a poly(organosiloxane) terminally bonded through a divalent hydrocarbon group to a polymerized activated unsaturated group. Further a method of making the glass coated siloxane contact lens is disclosed.
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Erb, Robert A., "Method for Protecting Wettable Surfaces on Contact Lenses by Chemical Formation of Inorganic Films," The Franklin Institute, Lab. for Research and Devel., AFSAM Report 61-42, AD257290 NTIS, Springfield, Va 22151.
Letter Eugene C.
Su Kai C.
Bausch & Lomb Incorporated
Corbin John K.
Lyons Ronald L.
Parker Frank C.
Phipps Robert M.
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