1. Rationale for and design of the National Eye Institute Prospective Evaluation of Radial Keratotomy (PERK) Study.;Waring;Ophthalmology,1983
2. Results of the Prospective Evaluation of Radial Keratotomy (PERK) study two years after surgery.;Cowden;Ophthalmology,1985
3. Progressive hyperopia with long-term follow-up of radial keratotomy.;Deitz;Arch. Ophthalmol.,1985
4. A careful evaluation of radial keratotomy patients;Deitz,1980
5. Busin, M., Yau, C. W., Avni, I., McDonald, M. B., and Kaufman, H. E.: The effect of changes in intraocular pressure on corneal curvature after radial keratotomy in the rabbit eye. Ophthalmology, in press.