The typographical corrections below were made to the article on the date noted. These changes have been incorporated in the article and the details are documented here.

27 October 2005:

The last two sentences were corrected in the Acknowledgements from:

Our study was supported by National Institutes of Health grants EY09412 (FG-F) and EY012146 (DLS) and the Thomas F. Jeffress and Kate Miller Memorial Trust. Dr. Gonzalez-Fernandez is currently the Elizabeth and Ira P. Ross Chair of Ophthalmic Pathology at SUNY Buffalo.

was corrected to:

Our study was supported by National Institutes of Health grants EY09412 (FG-F) and EY012146 (DLS), the Thomas F. Jeffress and Kate Miller Memorial Trust, and an unrestricted grant from Research to Prevent Blindness. Dr. Gonzalez-Fernandez is currently the "Ira G. Ross and Elizabeth Pierce Olmsted Ross, MD" Chair of Ophthalmic Pathology at SUNY Buffalo.