Submitted for Publication: October 31, 2012; final revision received February 12, 2013; accepted February 17, 2013.
Published Online: July 4, 2013. doi:10.1001/jamaophthalmol.2013.4160
Acquisition of data: K. G. Locke, K. I. Locke, Hoffman.
Analysis and interpretation of data: Birch, K. G. Locke, Wen, K. I. Locke, Hood.
Drafting of the manuscript: Birch, Hood.
Critical revision of the manuscript for important intellectual content: Birch, K. G. Locke, Wen, Hoffman.
Statistical analysis: Birch, K. G. Locke, Wen, Hood.
Obtained funding: Birch, Hoffman.
Administrative, technical, and material support: K. G. Locke, Hood.
Study supervision: Birch, Hood.
Conflict of Interest Disclosures: Dr Hoffman reports serving as a consultant for DSM Nutritional Products. Dr Hood reports serving as a consultant for Topcon.
Funding/Support: This study was supported by grant FD-R-02543 from the US Food and Drug Administration; by grant EY09076 from the National Eye Institute; by Foundation Fighting Blindness; and by DSM Nutritional Products.