The present invention discloses methods for treating eye disorders using opioid receptor antagonists. The methods include the step of administering an effective amount of a topically-administered opioid receptor antagonist in the absence of moxifloxacin. Preferably, the topically-administered opioid receptor antagonist is formulated as a solution. Preferably, the topically-administered opioid receptor antagonist is at least one agent selected from the group consisting of: naltrexone, naloxone, nalmefene, and a pharmaceutically-acceptable salt thereof. Preferably, the effective amount corresponds to a concentration of at least about 10−7 molarity. Preferably, the effective amount is based on a treatment administration of at least once every other day.
