Submitted for Publication: July 8, 2012; final revision received August 22, 2012; accepted August 27, 2012.
Published Online: November 9, 2012. doi:10.1001/jamaophthalmol.2013.642
Author Contributions: Dr Ho had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Conflict of Interest Disclosures: Dr Ho is a Scientific Advisory Board member for Physician Recommended Nutriceuticals, and Dr Fineman is a consultant for Physician Recommended Nutriceuticals.
Funding/Support: This study was funded by Physician Recommended Nutriceuticals, the Eye Research Institute, and the Wills Eye Institute at Thomas Jefferson University Hospital.
Additional Contributions: We thank Benjamin E. Leiby, PhD (Thomas Jefferson University, Jefferson Medical College, Department of Pharmacology and Experimental Therapeutics, Division of Biostatistics) for his statistical consultation; Michael Fendick, PhD, and Elizabeth Affel, MS, for their multifocal electroretinography consultation; and William Tasman, MD, Alfred C. Lucier, MD, and Paul Baker, MD, for their patient contributions.