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US 2002/0163620 A1Published application
Contact lens
AssigneeMenicon Co., Ltd.
InventorsKazuya Miyamura, Keiji Sugimoto, Tadashi Sawano
Life of this patent
Estimating the term…
Abstract
Disclosed is a contact lens having a back surface to be placed on a cornea. The back surface includes a generally circular central zone whose radius of curvature gradually decrease from its center toward its periphery, and an peripheral zone disposed around the central zone.
Claims12
A contact lens having a back surface adapted to face a cornea, wherein said back surface comprising:
- a generally circular central zone;
- and
- an peripheral zone disposed around said central zone,
- said central zone having a radius of curvature gradually decreasing from a center thereof toward a periphery thereof.
1 more element
Dependencies are inferred from the claim text.