Figure 2.

Survival curves of low vision and legal blindness (based on visual acuity and visual field) for patients with RPGR - associated RP. Kaplan–Meier plot showing the risk of developing low vision (green) and legal blindness, based on visual field (blue) or on visual acuity (red), with age. Survival analyses showed that legal blindness based on visual field is reached at a median age of 26.4 years (blue circle), low vision at 48.2 years (green circle), and legal blindness based on visual acuity at 51.3 years (red circle).