Global retinal oxygen saturation in eyes with progression or non-progression of proliferative diabetic retinopathy (PDR) before and after panretinal laser photocoagulation. Global retinal oxygen saturation in eyes with progression or non-progression of proliferative diabetic retinopathy (PDR) before and after panretinal laser photocoagulation. All values are given as median with inter quartile range (IQR). AV, arteriovenular. *Statistically significant. Thomas Lee Torp et al. Br J Ophthalmol doi:10.1136/bjophthalmol-2017-310576 ©2017 by BMJ Publishing Group Ltd.