The chemistry of silicone materials for biomedical devices and contact lenses.

The mechanical, physical and physiological requirements for biomedical and, more specifically, contact lens materials are outlined. The synthesis and properties of a wide range of silicones is reviewed with reference to typical materials and end uses. The advantages and limitations of presently available silicones are compared with those of conventional lens materials. The effect on such materials of emerging and future advances in silicone chemistry are briefly discussed.