Figure 1. Meta-analysis for the TNF-α −308G/A (rs1800629) polymorphism and risks of open angle glaucoma. Each study is shown by a point estimate of the effect size (OR; size inversely proportional to its variance) and its 95% confidence interval (95% CI; horizontal lines). The white diamond denotes the pooled OR. HTG, high-tension glaucoma; NTG, normal tension glaucoma; EXG, exfoliative glaucoma. Meta-analysis indicated a statistical significant association between the TNF-α −308G/A polymorphism with the risks of HTG, but not with the risks of NTG or EXG.