Figure 1.
Flow diagram outlining the selection process for studies in the systematic review and meta-analysis.
Table 1.
Main characteristics of the case-control studies included in the meta-analysis, 1991–2011.
Table 2.
Assessment of study quality.
Figure 2.
Random effects meta-analysis investigating the association of DM with NAION.
CI = confidence interval; OR = odds ratio; DM = diabetes mellitus; NAION = nonarteritic anterior ischemic optic neuropathy.
Table 3.
Results of leave-one-out sensitivity analysis.
Figure 3.
Funnel plot of all studies evaluating the association between DM and NAION.
DM = diabetes mellitus; NAION = nonarteritic anterior ischemic optic neuropathy.