CONTACT LENS FOR CORRECTING PRESBYOPIA

摘要

PROBLEM TO BE SOLVED: To achieve excellent wearability and stable sight correction with a contact lens for correcting presbyopia. SOLUTION: A near sight correction area is composed of a central optical part 16 of an approximately circular shape and a far sight correction area is composed of an annular peripheral optical part 18 existing around the central optical part 16. On the other hand, the lens front face 20 of the optical part 12 including the central optical part 16 and the peripheral optical part 18 is formed to a circular shape of the approximately specified curvature in the cross section in the radial direction. The lens rear surface 24 of the central optical part 16 is formed to the circular shape of approximately the specified curvature different from the curvature of the lens rear face 26 of the peripheral optical part 18 in the cross section in the radial direction.