Title:
SOFT CONTACT LENS
Document Type and Number:
Japanese Patent JP2934133
Kind Code:
B2
Abstract:
PURPOSE: To improve the wearing state of the soft contact lens, to improve the productivity of the soft contact lens, and to improve optical effects.
CONSTITUTION: The soft contact lens consists of an internal surface 10, an external surface 12, and an internal/external connection surface 14. The internal surface 10 consists of a center part 16 formed of an elliptic surface which has 0.2-0.7 eccentricity and a 5.00-10.00 radius of peak point curvature, an intermediate part 18 formed of an elliptic surface which is positioned at the periphery of the center part 16 and has 0.2-0.7 eccentricity and differs in at least one of eccentricity and radius of peak point curvature from the center part 16, and a peripheral part 20 which is positioned at the periphery of the intermediate part 18 and gradually isolated from the cornea with the outward radial direction from the intermediate part 18 so that the distance to the cornea gradually increases; and the respective parts are successively connected.
Inventors:
ANAMI NAOKI
TAKAGI BUNGO
MYAMURA KAZUYA
TAKAGI BUNGO
MYAMURA KAZUYA
Application Number:
JP26643893A
Publication Date:
August 16, 1999
Filing Date:
October 25, 1993
Export Citation:
Assignee:
MENIKON KK
International Classes:
G02C7/04; (IPC1-7): G02C7/04
Domestic Patent References:
| JP5742016A | ||||
| JP56119112A | ||||
| JP556386A | ||||
| JP63500403A |
Attorney, Agent or Firm:
Michio Nakajima (2 outside)
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