A Prospective, Contralateral, Eye to Eye Comparison of SMILE Surgery to LASIK Surgery

Inclusion Criteria: * Subjects age 22 and older with healthy eyes. Nearsightedness between -0.75 diopters and -8.00 diopters. * Subjects with up to 3.00 diopters of astigmatism. Exclusion Criteria: * Subjects under the age of 22. * Subjects with excessively thin corneas. * Subjects with topographic evidence of keratoconus. * Subjects with ectatic eye disorders. * Subjects with autoimmune diseases. * Subjects who are pregnant or nursing. * Subjects must have similar levels of nearsightedness in each eye. They can not be more than 1.5 diopter of difference between eyes. * Subjects with 3.25 or more diopters of astigmatism * Subjects must have similar levels of astigmatism in each eye. They can not have more than 0.50 diopters of difference between eyes.