1. Selective light absorbing contact lenses;Wichterle,1969
2. Method of forming color effects in hydrogel contact lenses and ophthalmic prosthesis;Wichterle,1972
3. Tinted soft lenses: The full spectrum;Meshel,1989
4. A four year retrospective study of prosthetic hydrogel lens use;McMahon;ICLC,1984
5. Pigmented contact lenses for prosthetic application;Cox;Trans Br Contact Lens Assoc,1991