Systane® Ultra Preservative Free Lubricant Eye Drops

Primary outcomes

1. Mean Overall IDEEL SB Score - Group 1

   Time frame: Baseline (Day 1), Day 30

   The Impact of Dry Eye on Everyday Life Symptom Bother (IDEEL SB) module is a 20-item, patient-reported outcome questionnaire that assesses the subject's symptoms of dry eye. For each item, the subject selected a single response for both eyes, where 0 = "None of the time" (Q1) or "I did not have this symptom/Not Applicable" (Q2-20) to 4 = "All of the time" (Q1) or "Very Much" (Q2-20). The overall score was calculated as the mean value of the non-missing item scores (Q1-20) multiplied by 25 and ranged from 0 (minimum) to 100 (maximum). Baseline was defined as the last non-missing value prior to the start date of the study treatment. For subjects who were not exposed, Baseline was defined as the value from Visit 1 (Screening). Higher scores indicate greater symptom bother. No statistical hypothesis was pre-specified for this endpoint. This endpoint was pre-specified for Group 1

2. Mean Overall CLDEQ-8 Score - Group 2

   Time frame: Baseline (Day 1), Day 30

   The Contact Lens Dry Eye Questionnaire-8 (CLDEQ-8) is an 8-item, patient-reported outcome questionnaire that evaluates the severity of dry eye symptoms in soft contact lens wearers within the past 2 weeks. For each item, the subject selected a single response for both eyes using a 0-4, 0-5, or 1-6 Likert scale. The overall score was calculated as the sum of the numerical responses for each of the 8 items and ranged from 1 (minimum) to 37 (maximum). A lower CLDEQ-8 score indicates less frequent or less intense symptoms. Baseline was defined as the last non-missing value prior to the start date of the study treatment. For subjects who were not exposed, Baseline was defined as the value from Visit 1 (Screening). No statistical hypothesis is pre-specified for this endpoint. This endpoint was prespecified for Group 2 only.