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Baseline ultra-widefield fluorescein angiography (OPTOS) of patients with treatment-naïve proliferative diabetic retinopathy. (A) Patient with subsequent disease inactivity 6 months after panretinal photocoagulation (PRP). Zone 3 graded as no capillary non-perfusion. (B) Patient with subsequent disease inactivity 6 months after PRP. Zone 3 graded as 76%–100% capillary non-perfusion.
