Evaluation of the Efficacy of Topical Ophthalmic Steroids in a Modified Conjunctival Allergen Challenge (CAC) Model

Structure: Prospective, single center, randomized, double-masked, parallel treatment comparison study. Subjects will be randomized to one of the following treatment arms to be dosed bilaterally twice daily (BID) for the first dosing period and four times daily (QID) for the second dosing period: 1. Prednisolone Acetate 1% ophthalmic suspension 2. Prednisolone Acetate 0.12% ophthalmic suspension 3. Loteprednol Etabonate 0.2% ophthalmic suspension 4. Tears Naturale® II Duration: Approximately four (4) weeks Controls: Artificial Tears (Tears Naturale® II)