
    slow accrual of subjects. may take longer than expected to complete the trial.
  
['dry eye', 'ocular graft vs host disease', 'meibomian gland dysfunction']
['brimonidine 0.15%', 'brimonidine 0.075%', 'placebo']

        Inclusion Criteria:

          1. Aged 18 years or older.

          2. Capable of giving informed consent and does provide informed consent.

          3. Diagnosis of Meibomian Gland Disease

          4. Women must be post-menopausal ≥ 1 year, or surgically sterilized. If not, a negative
             urine pregnancy test is required within 7 days of the participant receiving first dose
             of study drug along with definite evidence of contraceptive use during the duration of
             the study. Women of reproductive age should use a method of birth control that is
             acceptable to the participant and the study doctor. This may include oral
             contraceptive pills, birth control implants, barrier methods or abstinence. If a
             participant suspects pregnancy after being enrolled, another pregnancy test will be
             administered. If the test is positive, the participant will be discontinued from the
             study immediately.

        Exclusion Criteria:

          1. Allergic to Brimonidine or any similar products, or excipients of Brimonidine

          2. Currently receiving any Brimonidine preparation as a part of glaucoma management

          3. Receiving or have received within 30 days any experimental systemic medication.

          4. Active ocular infection or ocular allergies.

          5. Any history of eyelid surgery or ocular surgery within the past 3 months.

          6. Corneal epithelial defect larger than 1 mm2 in either eye.

          7. Have active drug/alcohol dependence or abuse history.

          8. Vulnerable populations, such as neonates, pregnant women, children, prisoners,
             institutionalized individuals, or others who may be considered vulnerable populations.
      