Submitted for Publication: February 6, 2013; final revision received April 22, 2013; accepted April 29, 2013.
Published Online: October 10, 2013. doi:10.1001/jamaophthalmol.2013.5036.
Study concept and design: Aldave, Frausto.
Acquisition of data: Aldave, Frausto, Nguyen, Raber.
Analysis and interpretation of data: Aldave, Ann, Frausto, Yu, Raber.
Drafting of the manuscript: Aldave, Ann, Frausto.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Frausto, Yu.
Obtained funding: Aldave.
Administrative, technical, or material support: Ann, Frausto, Nguyen.
Study supervision: Aldave.
Conflict of Interest Disclosures: None reported.
Funding/Support: Support for the conduct of this study was provided by the National Eye Institute (grant 1R01 EY022082 to Dr Aldave and core grant P30 EY000331), by an unrestricted grant from Research to Prevent Blindness, and by a grant from the Gerald Oppenheimer Family Foundation Center for the Prevention of Eye Disease (to Dr Aldave).
Role of the Sponsor: The funding agencies had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: We thank Cosimo Mazzotta, MD, for providing unpublished keratometry data from a patient that he and his colleagues previously reported with PPCD and steep corneal curvature.