Figure 3. Forest plots of estimates of odds ratios of the association of genetic polymorphisms in CYP1B1 with primary open-angle glaucoma (POAG). Each study was represented by a square whose area was proportional to the weight of the study. The overall effect from meta-analysis is represented by a diamond whose width represents the 95% CI for the estimated OR. A: Estimates of odds ratio of rs180040 in CYP1B1 with POAG. B: Estimates of odds ratio of rs1056836 in CYP1B1 with POAG. C: Estimates of odds ratio of rs10012 in CYP1B1 with POAG.