Dr. Klein specializes in retinal disease. His research interests include macular degeneration, retinal vascular diseases and diabetic retinopathy.
- M.D., 1966, Northwestern University Medical School
- Ophthalmology-University of Illinois Eye and Ear Infirmary, Chicago
- Retina-Boston University, Retina-Wilmer Institute, Johns Hopkins, Baltimore
- American Board of Ophthalmology