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

<table>Meta-analysis of visual acuity (radix astragali group versus control group).</table>

Evidence-Based Complementary and Alternative Medicine

Figure 2: Systematic Review and Meta-Analysis of 16 Randomized Clinical Trials of Radix Astragali and Its Prescriptions for Diabetic Retinopathy 