Menicon Co., Ltd.

Yasuhito Hishida

Kazuhiko Nakada

Misako Nishibayashi

Naomi Saito

Atsuyuki Nakamura

Tsuyoshi Watanabe

Noriko Iwata

Keiji Sugimoto

Masanori Kadoya

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.

Oxygen permeable contact lens having high durable hydrophilic surface

1. A water-absorptive contact lens obtained by saponification of a copolymer composed essentially of:

Water-absorptive contact lens

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Gifu-ken, Japan

Yasuhito Hishida