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Objectives . To determine if hyperopia is a risk factor for primary angle-closure glaucoma (PACG) in the Dutch population and to identify other biometrical parameters as risk factors for PACG including axial length (AL), anterior chamber depth (ACD), and  k  values.  Methods . The study population consisted of PACG patients that had undergone a laser peripheral iridotomy (LPI). The control group consisted of age- and gender-matched cataract patients. The main outcome was hyperopia (spherical equivalent ≥+0.5 dioptres) measured with IOL Master or autorefractor. Refractive error, ACD, AL, and  k  values were tested with a Mann-Whitney  U  test and by logistic regression.  Results . 117 PACG patients and 234 controls were included (mean age = 80 years ± 3.6). The prevalence of hyperopia in patients and controls was 69.6% and 61.1%, respectively (Fisher's test  P  = 0.076). Mann-Whitney  U  test showed no statistically significant relation with refractive error ( P  = 0.068) or  k  values ( P  = 0.607). In contrast, ACD and AL were statistically significant ( P  < 0.001). Tested with logistic regression, only ACD was a significant predictor of PACG ( P  < 0.001).  Conclusion . There was no statistically significant correlation between refractive error and PACG. ACD was strongly correlated, though, with PACG, whereas AL turned out to be a less significant risk factor.

Is Hyperopia an Important Risk Factor for PACG in the Dutch Population?—A Case Control Study