The purpose of this study is to compare the effects of two marked ocular anti-allergy medications in cat sensitive subjects with allergic conjunctivitis.

Inclusion Criteria:

• Documented history of ocular allergy to cats.
• Positive skin prick allergen reaction to cat dander.

Exclusion Criteria:

• Use of any topical or systemic corticosteroids, immunosuppressive agents, antihistamines, decongestants, NSAIDs, or asprin during the two weeks prior to enrollment into the study.
• History of severe asthma, reactive airway disease or bronchial obstruction.
• Ocular surgery or trauma in the last year.