Submitted for Publication: September 28, 2012; final revision received November 8, 2012; accepted November 18, 2012.
Published Online: May 16, 2013. doi:10.1001/jamaophthalmol.2013.2125.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by grant 2011C33019 from the Department of Science and Technology of Zhejiang Province, China.
Additional Contributions: We thank De-Quan Li, MD, from the Cullen Eye Institute, Baylor College of Medicine, for his advice and revisions to this article.