Elevated Plasma Endothelin-1 Levels in Normal Tension Glaucoma and Primary Open-Angle Glaucoma: A Meta-Analysis

<div>Meta-analysis of the plasma ET-1 levels in the NTG and control groups. A random effects model was used to calculate the mean difference. CI: confidence interval; SD: standard deviation.</div>

Journal of Ophthalmology

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Figure 2: Elevated Plasma Endothelin-1 Levels in Normal Tension Glaucoma and Primary Open-Angle Glaucoma: A Meta-Analysis 