MÉTODO PARA FORMAR UMA LENTE OFTÁLMICA BIFOCAL FOTOCROMICAMENTE ATIVADA, E, COMPOSIÇÃO TERMORRÍGIDA

摘要

A method and coating used to prepare a photochromically-enabled bifocal ophthalmic lens. The coating is a high adhesive strength acrylate-based coating that contains a small quantity of a polycarbonate-based TPU. The coating is applied to produce an intermediate imbibable bifocal surface. A photochromic solution is subsequently imbibed by contact with the bifocal surface.