Oral Gabapentin Versus Placebo for Treatment of Postoperative Pain Following Photorefractive Keratectomy

Inclusion Criteria: * Ability to understand and provide informed consent to participate in this study and complete follow-up visits. * Planned Photorefractive keratectomy (PRK) at the WRAMC Center for Refractive Surgery. * Male or female, of any race, and at least 21 years old at the time of the pre-operative examination, and have signed an informed consent. The lower age limit of 21 years is intended to ensure documentation of refractive stability. * Access to transportation to meet follow-up requirements. Exclusion Criteria: * Any reason to be excluded for PRK. * Female subjects who are pregnant, breast feeding or intend to become pregnant during the study. Female subjects will be given a urine pregnancy test prior to participating in the study to rule out pregnancy. \[Pregnancy and breastfeeding are contraindications to refractive surgery in general, including PRK, whether participating in this study or not\]. * Patients with known allergy, sensitivity or inappropriate responsiveness to Gabapentin or any of the medications used in the post-operative course. * Patients with known depressed renal function. * Any physical or mental impairment that would preclude participation in any of the examinations.