Abstract The combined contact lens is characterized in that it comprises a zone of a hydrophilic material, an aperture in the center of said zone, and a solid body from an optically transparent material fixed in said aperture, said solid body being made in the form of a rod bonded chemically with said zone. In the method for the manufacture of the combined contact lens, a hydroxyl-containing monomer is polymerized in the presence of an agent initiating polymerization, a solvent, and a linking agent, inside a mould provided with a rod located in the center of the mould and made from a polymer that is inactive toward water but swells in the solution of the starting hydroxyl-containing monomer. The invention provides good toleration of the lens with the patient and ensures optimum optical effect with various abnormalties of refraction and in various pathological states of the cornea.
A combined contact lens consisting of a hydrated hydroxyl-containing material having at the center thereof a solid body of optically transparent material, wherein the surface of said solid body does not contact the cornea, said solid body being chemically bonded to said hydrated zone in the swollen state.
Claim 2
Dependent Claim
48 words
A combined contact lens consisting of a hydrated hydroxyl-containing material having at the center thereof a solid body of optically transparent material, wherein the surface of said solid body does not contact the cornea, said solid body being chemically bonded to said hydrated zone in the swollen state.
Claim 3
Dependent Claim
14 words
A combined contact lens according to claim 1, wherein said hydroxyl-containing material comprises polyoxyalkyl-methacrylate.
Claim 4
Dependent Claim
19 words
A combined contact lens according to claim 1 wherein said optically transparent material of the solid body comprises polymethylmethacrylate.
Claim 5
Dependent Claim
50 words
A combined contact lens consisting of a zone of hydrophilic polyoxyalkylmethacrylate, having at the center thereof and chemically bonded thereto, a solid body of optically transparent polymethylmethacrylate, wherein the surface of said optically transparent polymethylmethacrylate does not contact the cornea, and wherein said hydrophilic polyoxyalkylmethacrylate contacts the cornea and/or sclera.
Claim 6
Dependent Claim
50 words
A combined contact lens consisting of a zone of hydrophilic polyoxyalkylmethacrylate, having at the center thereof and chemically bonded thereto, a solid body of optically transparent polymethylmethacrylate, wherein the surface of said optically transparent polymethylmethacrylate does not contact the cornea, and wherein said hydrophilic polyoxyalkylmethacrylate contacts the cornea and/or sclera.
Claim 7
Dependent Claim
11 words
The contact lens of claim 4 wherein said polyoxyalkylmethacrylate is polyoxyethylmethacrylate.