Abstract: A photochromic lens consists of a lens coated with an elastomeric film having a photochromic dye dispersed therein. The elastomeric provides abrasion resistance and some impact resistance to the lens. The photochromic lens is characterized by lower spectral transmission when activated, and shorter activation and deactivation times than previously known photochromic lenses. A method for making the photochromic lens consists of dissolving one or more photochromic dyes in an elastomeric pre-polymer solution, immersing the lens in the solution so that the lens becomes coated with the prepolymer solution, and treating the lens, for example, by heating, to cause said prepolymer to form an elastomeric film on the lens. Preferably, the pre-polymer solution is a polyurethane pre-polymer.

Abstract: A method of forming an ophthalmic lens using a composite ophthalmic lens vacuum mold to quickly and inexpensively produce, on-site, multi-focal, prescription and non-prescription optical quality eyeglasses, with or without photochromic, and photochromic non-prescription (e.g., sunglasses, safety glasses, reading glasses, etc.) optical quality eyeglass via a vacuum remolding. The method further includes a rigid remolding process for forming the composite ophthalmic lens.