Statistical package for the social sciences for windows v 17.0

All data analyses were performed using the Statistical Package for the Social Sciences for Windows (v 17.0; SPSS Inc., Chicago, IL, USA). All continuous data were presented as the mean ± standard deviation. Differences between groups based on age were calculated using a one-way analysis of variance (ANOVA) and multiple comparisons using a Scheffé test. A P-value of <0.05 was considered statistically significant. Trends and associations between variables were evaluated further using Spearman’s analysis of correlation. Multiple linear regressions with forced-entry procedure were performed to determine the predictors for QoL.

Pearson correlation was performed to evaluate the relationship between the corneal deformation amplitude and optic nerve head parameters. Partial Pearson correlation coefficients were calculated and adjusted for age, IOP, central corneal thickness, and axial length. For all statistical analyses, the Statistical Package for the Social Sciences for Windows (v. 17.0; SPSS Inc., Chicago, IL) was used, and P < .05 was considered statistically significant.