Table 1.
The prevalence of significant refractive error in different age groups: number (rate).
Fig 1.
The receiver operating characteristic (ROC) curve of distance visual acuity (DVA), near visual acuity (NVA) and the series combined test of distance and near visual acuity (DVA combined NVA) in detecting significant refractive errors.
Table 2.
The receiver-operating characteristic (ROC) curve efficacies and cutoff points of near vision acuity (NVA), distance vision acuity (DVA) and the series combined test.
Table 3.
The significance level (P) and Z statistics of the differences between distance vision acuity (DVA), near vision acuity (NVA) and combined examinations: P (Z).