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Table 1 Diabetic retinopathy (DR) grading based on the National Health Service Grading Classification System [17] with follow-up recommendations adapted from the American Academy of Ophthalmology [18]

From: Feasibility and efficacy of diabetic retinopathy screening among youth with diabetes in a pediatric endocrinology clinic: a cross-sectional study

Grade Description Recommendation
R0 No diabetic retinopathy Re-evaluate in twelve months with either eye care provider or photographic screening
R1 Background DR Refer to eye care provider
R2 Pre-proliferative DR Refer to ophthalmologist promptly
R3 Proliferative DR Refer to ophthalmologist promptly
M Maculopathy Refer to ophthalmologist promptly
P Photocoagulation Refer to eye care provider
U Unclassifiable/Ungradable Refer to eye care provider