Figure 1

Trends over time of Glaucoma Symptom Scale (GSS) and 25-item National Eye Institute Visual Function Questionnaire (NEI-VFQ-25) scores. (A) Trends over time of GSS total score, Function-4 and Symptoms-6 subscale scores; (B) Trends over time of NEI-VFQ-25 total score, general health and general vision subscale scores.