Ocular Allergy Treatment Practical Impact Trial

Inclusion Criteria: 1. patients age 18 and older with a history of seasonal or perennial forms of allergic conjunctivitis and skin test positive reactivity to seasonal aeroallergens 2. Total Ocular Symptom Score (TOSS) on the day of enrollment of 4 or more. 3. have allergic ocular symptoms for the past week for which they are either treating with ophthalmic agents or have had no treatment. 4. Are willing/able to follow instructions from the study investigator and his/her study staff. 5. Have signed infromed consent approved by Institutional Review Board or Independent Ethics Committee. \- Exclusion Criteria: 1. Active ocular infection; 2. History of retinal detachment, diabetic neuropathy, or any progressive retinal disease; 3. Ocular surgical intervention within three (3) months prior to visit 1 or scheduled during the study. 4. History of unstable, or uncontrolled disease of any nature. 5. Pregnancy or lactation; 6. Have a known hypersensitivity tp LASTACAFT™ (alcaftadine) -