Optical article photocromo.

A photochromic article comprising, in combination: (a) a polymeric organic substrate, (b) a photochromic polymeric organic coating bonded to at least one surface of said polymeric substrate, polymeric coating comprising a photochromic amount of at least one photochromic organic material , (c) an acrylate-based film, irradiated-cured, coherently bonded to said photochromic polymer coating, in which the acrylate-based film, irradiated-cured, is prepared from a composition comprising a mixture of 10 to 85 % by weight of cationically initiated monomer (s) and 90 to 15% by weight of free radical initiated acrylate monomer (s), and which is: (1) resistant to elimination by an inorganic solution Caustic aqueous, (2) compatible with an abrasion-resistant coating containing organosilane, and (3) more scratch-resistant than the aforementioned photochromic polymer coating ; and (d) an organosilane-based abrasion resistant coating fixed on the surface of the acrylate-based film.