Bacterial conjunctivitis
1 or 2 drops q2h to q4h on days 1 and 2, then 1 or 2 drops QID on days 3 through 7.
Bacterial corneal ulcer
Days 1 and 2: 1 or 2 drops q30min while awake, plus 1 or 2 drops on waking at about 4 and 6 hours after retiring. Days 3 through 7 to 9: 1 or 2 drops hourly while awake. Days 7 to 9 through completion: 1 or 2 drops QID.