Patent ID: 9664926
Date: 2017-05-30
CPC Classifications: A61F,A61K,A61L,A61N,A61P,G02C

Claim:
1. A contact lens for cornea-correction crosslinking comprising an ultraviolet transmitting material, the contact lens having a relief region constituted by a concave portion and a pressing region constituted by a convex region being formed on a side of the contact lens in contact with a cornea of a patient, the contact lens being for correcting at least one of naked eye vision and keratoconus cornea by pressing the pressing region to the cornea and changing a shape of the cornea, wherein, when the contact lens is mounted on the cornea, the pressing region is projected in a convex curved-surface shape at a position corresponding to a center of a corneal dome to be pressed, thereby forming a concave curved-surface on the cornea; the relief region is constituted by an annular concave portion that is not in contact with the cornea when the contact lens is mounted on the cornea and that has a cross section in a concave circular arc shape and is formed at a position encircling an outer periphery of the pressing region, and the contact lens further comprises: an anchor region provided at a position encircling an outer periphery of the relief region, the anchor region having a shape aligned with a contour of the cornea when the contact lens is mounted on the cornea; a peripheral portion encircling an outer periphery of the anchor region; a reservoir portion for storing a riboflavin solution for cornea-correction crosslinking, the reservoir portion being centrally located and being provided outside the pressing region in a thickness direction of the contact lens; at least one communication hole for communicating an inside of the reservoir portion with the pressing region, and an operation-side electrode having a same polarity as that of the riboflavin solution, the operation-side electrode being provided at a position in contact with the riboflavin solution in the reservoir portion, thereby allowing infiltration of the riboflavin solution into a corneal tissue by iontophoresis.