Submitted for Publication: March 31, 2013; final revision received July 6, 2103; accepted July 15, 2013.
Published Online: December 12, 2013. doi:10.1001/jamaophthalmol.2013.6235.
Study concept and design: All authors.
Acquisition of data: Tomkins-Netzer.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Tomkins-Netzer, Lightman.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Tomkins-Netzer, Taylor.
Administrative, technical, and material support: Lightman.
Study supervision: Taylor, Lightman.
Conflict of Interest Disclosures: Dr Lightman has received consultancy fees from Allergan, GSK, 4Sight, and Paraxcel; is on the advisory boards of Allergan and GSK; and has received consultancy fees from Allergan. No other disclosures were reported.
Funding/Support: Dr Taylor was supported by the UK National Institute of Health Research.
Role of the Sponsor: The funding source had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.