A Single-Center Evaluation of the Pattern of Allergic Signs and Symptoms During 4 Weeks in Ragweed Season

Inclusion Criteria: * Subjects must: 1. be willing and able to read, sign, and date the informed consent and HIPAA documents prior to initiation of Visit 1 procedures or exams; 2. be at least 18 years of age; 3. be willing to avoid disallowed medication, such as anti-allergy therapies 4. have a positive history of ocular allergies and a positive skin test reaction to ragweed within the past 24 months; 5. have a calculated logMAR visual acuity score using the ETDRS Chart of 0.60 or better in each eye at Visit 1; Exclusion Criteria: * Subjects may not: 1. have preauricular lymphadenopathy or any ocular condition that could affect study parameters (particularly, clinically significant blepharitis, follicular conjunctivitis and iritis); 2. have had any ocular infection within the last 30 days; 3. have a positive diagnosis of moderate to severe dry eye syndrome (i.e., requiring daily use of artificial tears); 4. wear contact lenses to each office visit; Note: Subjects will be allowed to use cold compresses.