1. The diffractive multifocal intraocular lens;Simpson;Eur J Implant Refractive Surg,1989
2. The FDA report on intraocular lenses;Stark;Ophthalmology,1983
3. Optical performance of multifocal intraocular lenses;Holladay;J Cataract Refract Surg,1990
4. The design of a new letter chart for measuring contrast sensitivity;Pelli;Clin Vis Sci,1988
5. Low-contrast letter charts as a test of visual function;Regan;Ophthalmology,1983