COMPOSITE OPHTHALMIC LENS

摘要

An improvement in the epoxy plastic element of a laminated, glass-plastic, ophthalmic lens structure, and a method of effecting the improvement, are disclosed. The improved element is cast from a casting mix in which the ingredients are maintained in certain relationships to each other to provide an optically clear casting essentially free of striations. The cast material is gelled at a low temperature not over about 100.degree.C, and may then be cured at a temperature up to 200.degree. for a period of at least two hours.