Shaped body, such as a contact lens, of at least two polymerized materials and method of making same

Abstract From the Canadian patent

A shaped body especially a contact lens, is, manufactured from at least two polymerized materials with one polymerized material being swellable relative to the other polymerized material. The shaped body is formed having polymerized sections of the first material the, second material and a substantially random copolymer of the first and second material. A contact lens in accordance with the invention is provide with a center section of relatively hard transparent polymerized material and an edge section of a relatively soft hydrated transparent hydrophilic polymerized material circumscribing the center section. A transition section of a substantially random copolymer provides the direct …