In parallel with the other DR lesions, the number and area of VB increased from moderate to severe NPDR ( p < 0.05) and then showed a decreasing trend from severe NPDR to PDR.
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The relationship of diabetic retinopathy severity scales with frequency and surface area of diabetic retinopathy lesions.
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Our study was cross-sectional and demonstrated that while the number of MA increased with the severity of NPDR, there is an apparent trend for a decrease at the PDR level (Fig. 2 ).
Conclusion A quantitative approach reveals that DR lesions’ number and area generally correlate with ICDR-based categorical DR severity levels with an increasing trend in the number and area of DR lesions from mild to severe NPDR and a decrease from severe NPDR to PDR.