Fig. 8From: Development of the Near Vision Presbyopia Task-based Questionnaire for use in evaluating the impact of presbyopiaeCDF of change in NVPTQ Satisfaction by PGIC. Note Change is computed as Day 28 Hour 1 minus Day 1 Hour 0. Positive scores indicate improvement. eCDF, empirical cumulative distribution; NVPTQ, Near Vision Presbyopia Task-based Questionnaire; PGIC, Patient Global Impression of ChangeBack to article page