This brief communication was supported in part by an unrestricted grant from Research to Prevent Blindness, Inc. New York, NY.

The author has no financial or conflicts of interest to disclose.

Address correspondence and reprint requests to Allen M. Putterman, M.D., Department of Ophthalmology, University of Illinois Medical College, 111 N. Wabash, Suite 1722, Chicago, IL 60602. E-mail: [email protected]