1. Optics of contact lenses;Bennett,1985
2. Contact Lens Optics and Lens Design;Douthwaite,1995
3. The clinical performance of hard gas-permeable lenses;Pearson;Clin. Exp. Optom.,1986
4. Vision with hydrophilic contact lenses;Sarver;J. Am. Optom. Assoc.,1972
5. Visual acuity in hard and soft contact lens wearers: a comparison;Wechsler;J. Am. Optom. Assoc.,1978