Case Control Study
Copyright ©The Author(s) 2021.
World J Diabetes. Feb 15, 2021; 12(2): 138-148
Published online Feb 15, 2021. doi: 10.4239/wjd.v12.i2.138
Figure 1
Figure 1 Flowchart demonstrates the number of patients enrolled, grouping, examination and analyses in the study. NDR: Without diabetic retinopathy; NPDR: Non-proliferative diabetic retinopathy; PDR: Proliferative diabetic retinopathy.