['dry eye']
['pregabalin', 'placebo']

        Inclusion Criteria:

          -  18 and 65 years of age

          -  undergoing LASIK (unilateral or bilateral procedure).

          -  Females of child-bearing age will need a negative urine or serum pregnancy test at the
             screening visit.

          -  ocular and systemic medication regimen has been stable for 3 months

        Exclusion Criteria:

          -  Pregnant or lactating, participating in another study with an investigational drug
             within one month prior to screening

          -  Using gabapentin, pregabalin, anti-convulsants, duloxetine, venlafaxine (SNRI), or
             tri-cyclic antidepressants

          -  have a history of allergic, anaphylactic reaction, or severe systemic response to
             pregabalin or gabapentin

          -  use corticosteroids chronically or during the month prior to surgery, or have a
             history of corneal disease (HSV or varicella zoster keratitis, prior corneal incisions
             (cataract surgery, radial keratotomy, LASIK), prior corneal ulcer).

          -  patients with systemic co-morbidities that may confound DE such as HIV, sarcoidosis,
             graft-versus host disease or a collagen vascular disease.

          -  Adults unable to consent

          -  Individuals who are not yet adults (infants, children, teenagers)

          -  Prisoners
      