Accepted for Publication: March 10, 2011.
Author Contributions:Acquisition of data: Patel and Murphy. Analysis and interpretation of data: Patel, Murphy, and Shields. Drafting of the manuscript: Patel and Murphy. Critical revision of the manuscript for important intellectual content: Shields. Study supervision: Murphy and Shields.
Financial Disclosure: None reported.
Funding/Support: Support was provided by the Retina Research Foundation of the Retina Society, Cape Town, South Africa (Dr Shields), and the Eye Tumor Research Foundation, Philadelphia, Pennsylvania (Dr Shields).