| 摘要 |
A method of forming a composite lens blank (B) from which a lens (10, 18) adapted for use with the human eye can be formed is disclosed. The method includes providing a first portion (28, 42, 58) formed of a solid, bio-compatible plastic that can be sterilized. A liquid biocompatible plastic is then positioned adjacent to the first portion (28, 42, 58) to form a second portion (36, 50, 64). The plastics are selected so that the first and second portions will be bonded through polymerization. The positioning of the portions is arranged so that the material of the outer portion (36, 42, 58) is colored and the material of the inner portion (28, 50, 64) is optically transparent. Upon hardening the material of the second portion (36, 50, 64) forms a polymerized composite (c) with the first portion (28, 42, 58). |
