1. An analysis and interpretation of refractive errors after penetrating keratoplasty;Perlman;Ophthalmology,1981
2. Oversized donor grafts in penetrating keratoplasty; a randomized trial;Heidemann;Arch Ophthalmol,1985
3. The principal problems of penetrating keratoplasty: Graft failure and graft astigmatism. Symposium on Medical and Surgical Diseases of the Cornea;Paton,1980
4. Corneal curvature changes associated with penetrating keratoplasty: A mathematical model;Olson;Ophthalmic Surg,1980
5. Evaluation of manual, motorized, and laser trephines by shadow photogrammetric analysis;Denham;ARVO abstracts. Invest Ophthalmol Vis Sci,1988