Efficacy of Once-Daily Olopatadine 0.2% Ophthalmic Solution Compared to Twice-Daily Olopatadine 0.1% Ophthalmic Solution for the Treatment of Ocular Itching Induced by Conjunctival Allergen Challenge

Olopatadine 0.1% (Patanol) and olopatadine 0.2% (Pataday) ophthalmic solutions are topical ocular anti-allergic agents with antihistaminic and mast cell stabilizing properties. The efficacy of two doses of olopatadine 0.1% was compared to one dose of olopatadine 0.2% in the prevention of ocular itching associated with allergic conjunctivitis over 24 hours. This double-masked conjunctival allergen challenge (CAC) study found no significant...