Systematic Review and Meta-Analysis of 16 Randomized Clinical Trials of Radix Astragali and Its Prescriptions for Diabetic Retinopathy

<table>Flowchart showing the number of studies evaluated and excluded from the systematic review.</table>

Evidence-Based Complementary and Alternative Medicine

Figure 1: Systematic Review and Meta-Analysis of 16 Randomized Clinical Trials of Radix Astragali and Its Prescriptions for Diabetic Retinopathy 