Submitted for Publication: March 31, 2014; final revision received August 9, 2014; accepted October 12, 2014.
Published Online: December 11, 2014. doi:10.1001/jamaophthalmol.2014.5079.
Study concept and design: Marr, Abramson, McCormick, Barker.
Acquisition, analysis, or interpretation of data: Marr, Cohen, Williamson, Barker.
Drafting of the manuscript: Williamson, Barker.
Critical revision of the manuscript for important intellectual content: Marr, Abramson, Cohen, McCormick, Barker.
Statistical analysis: Barker.
Administrative, technical, or material support: Marr, Cohen, Williamson.
Study supervision: Marr, Abramson.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Cohen reported receiving personal fees from RI Consultants outside of this work.
Funding/Support: This work was supported in part by grants from the Fund for Ophthalmic Knowledge Inc and Perry’s Promise Fund.
Role of the Funder/Sponsor: The funders 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.