Financial Disclosure: None reported.
Funding/Support: This work was funded by grants G0600755 from the Medical Research Council and MX-2932 from the Science and Technology Facilities Council. Prof Meek is a Royal Society Wolfson Research Merit Award Holder.
Role of the Sponsors: The funding organizations had no involvement in the design and conduct of the study; collection, management, analysis, and interpretation of the data; or preparation, review, or approval of the manuscript.
Previous Presentation: This paper was presented at the Eurokeratoconus II meeting; September 23, 2011; Bordeaux, France.
Additional Contributions: Abbott Medical Optics allowed the loan and use of the IntraLase FS60 femtosecond laser. Dr Valerie Smith and the staff at the Bristol Eye Bank, Bristol, England, provided the normal cornea used in this study, and Mr Ashraf M. Mahmoud, Ohio State University, provided technical assistance.