Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-08-12
1999-06-08
Merriam, Andrew E. C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 21, 524 24, 525 541, 527201, 264 17, 427 21, 427 224, 427536, C08J 704, G02B 104
Patent
active
059105186
ABSTRACT:
A hydrophilic oxygen permeable contact lens having a front surface which is not to be in contact with the cornea of a human eye when the contact lens is worn on the human eye, wherein at least the front surface of the contact lens is coated with a hydrophilicity rendering material which renders the front surface hydrophilic and which is selected from the group consisting of: (A) hydrophilic silicone oil which is represented by the formula given in the specification and whose viscosity at a temperature of 20.degree. C. is not higher than 5,000 centipoise; (B) polysaccharide or its derivative; and (C) denatured collagen whose average molecular weight is in a range of 400.about.100,000. Also disclosed is a method of producing the hydrophilic oxygen permeable contact lens.
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Hishida Yasuhito
Nakada Kazuhiko
Nakamura Atsuyuki
Nishibayashi Misako
Saito Naomi
Menicon Co. Ltd.
Merriam Andrew E. C.
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