Dianne,
This study is pre-clinical still - that is, not involving humans yet. I searched on "Brian McKay" and retinal. Here is an article from the U of Arizona.
The article mentions a "Southwest Age-Related Macular Degeneration (ARMD) Research Program" at the University of Arizona College of Medicine Department of Ophthalmology in Tucson.
http://www.medicine.arizona.edu/news/story.cfm?ID=600
Good luck -- Jean