Submitted for Publication: March 27, 2013; final revision received May 19, 2013; accepted June 8, 2013.
Published Online: November 14, 2013. doi:10.1001/jamaophthalmol.2013.5605.
Study concept and design: Takihara, Inatani, Ogata-Iwao.
Acquisition of data: All authors.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Takihara, Inatani, Kawai, Tanihara.
Critical revision of the manuscript for important intellectual content: All authors.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported in part by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology, Tokyo, Japan (Drs Inatani, Inoue, and Tanihara).
Role of the Sponsor: The Ministry of Education, Culture, Sports, Science, and Technology had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, and approval of the manuscript; and decision to submit the manuscript for publication.