1. In search of the right high index lens;Young;Optical World,1989
2. Developments in glass materials;Merigold;Aust J Optom,1982
3. Prescribing for visibility;Davis;Probl Optom,1990
4. Loshin DS, Fannin T. Ophthalmic lens design for high index materials. Paper presented at the American Academy of Optometry, 1983.
5. Use of Impact Resistant Lenses in Eyeglasses and Sunglasses. Code of Federal Regulations 21 CFR 801.410. Washington, DC, Office of the Federal Register, April 1, 1990.