Describes a photochromic plastic article, e.g., an ophthalmic photochromic
article, such as a lens, in which the article includes (1) a polymeric
substrate, such as a thermoset or thermoplastic substrate, (2) a
photochromic polymeric coating appended to at least one surface of the
substrate, the photochromic polymeric coating containing a photochromic
amount of at least one organic photochromic material, e.g., spirooxazine,
naphthopyran and/or fulgide, and (3) a radiation-cured, acrylate-based
film coherently appended to the photochromic coating, the acrylate-based
film being (a) resistant to removal by aqueous solutions of inorganic
caustic, e.g., potassium hydroxide, (b) compatible with organo
silane-containing abrasion-resistant coating, and (c) harder than said
photochromic coating. Describes also the aforedescribed photochromic
article having an abrasion-resistant coating affixed to the
radiation-cured acrylate-based film, e.g., an abrasion-resistant coating
comprising an organo silane; and a photochromic article having an
antireflective coating affixed to the abrasion-resistant coating.