To compare differences in vascular density within the superficial vascular complex (SVC) and deep vascular complex (DVC) across quadrants among healthy individuals, patients with diabetes mellitus (DM) without diabetic retinopathy (DR), and those with DR, emphasizing the significance of these measurements.
Key Findings:
Peripheral annular capillary dropout density is optimal for distinguishing non-proliferative diabetic retinopathy (NPDR) from no-DR.
Total perfusion density and capillary perfusion density in peripheral subregions show superior discriminative power for advanced DR stages.
Wider field of view in OCTA provides more comprehensive information for DR diagnosis.
Interpretation:
The study highlights the importance of quadrant-specific vascular density measurements in identifying early indicators of diabetic retinopathy, suggesting that OCTA can enhance early detection and monitoring.
Limitations:
Study limited to non-proliferative DR patients without diabetic macular edema, which may not represent the broader diabetic population.
Sample size may not adequately reflect the diversity of the diabetic population.
Conclusion:
Utilizing a wide-field OCTA system can improve the detection of early biomarkers for diabetic retinopathy, potentially leading to better screening and treatment strategies, thereby enhancing patient outcomes.
