| 摘要 |
A process of producing an intraocular lens (28) of a one-piece type in which the lens includes an optical portion (24) and at least one support portion (26) produced integrally with each other, the process being characterized by including the steps of (a) forming a first polymerized material into a lens blank (10), the lens blank including a convex portion (12) providing the optical portion of the intraocular lens, and a flange portion (14) surrounding the convex portion, (b) applying, to one (15) of opposite surfaces of the flange portion (14) on a side of a convex surface (13) of the convex portion (13), a monomer composition which is polymerizable to produce a second polymerized material (22) different from the first polymerized material, the monomer composition including at least one polymerizable monomer, (c) polymerizing the monomer composition on the flange portion (14) to provide a double-layer portion (14, 22) having the flange portion (14) and the second polymerized material (22) produced integrally with the lens blank from the monomer composition, and (d) forming the convex portion (12) and double-layer portion (14, 22) of the lens blank, into the optical portion (24) and at least one support portion (26) of the intraocular lens, respectively. <IMAGE> |
