1. From the Ocular Surface Imaging Center and 2Cornea and Refractive Surgery Service, Massachusetts Eye & Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts.
2. From the Ocular Surface Imaging Center and
3. Cornea and Refractive Surgery Service, Massachusetts Eye & Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts.