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Table 2 Prevalence of refractive errors in 1–18-month-old children determined by Spot Vision Screener

From: Refractive errors and risk factors for myopia in infants aged 1–18 months in Tianjin, China

Parameters Myopia Emmetropia Hyperopia Astigmatism
Age in months n (%) n (%) n (%) n (%)
1–3 4 (2.9%) 7 (5.0%) 102 (72.9%) 66 (46.4%)
3–6 4 (2.8%) 13 (9.1%) 77 (53.8%) 86 (60.1%)
6–9 12 (7.7%) 22 (14.1%) 40 (25.6%) 89 (57.7%)
9–12 4 (4.1%) 12 (16.4%) 14 (19.2%) 25 (34.2%)
12–18 6 (8.5%) 9 (12.7%) 16 (22.5%) 25 (35.2%)
Total 30 (5.1%) 63 (10.8%) 249 (42.7%) 291 (49.9%)
P 0.190 0.045 <0.001 <0.001
Boys 10 (3.2%) 37 (11.9%) 140 (44.9%) 146 (46.8%)
Girls 20 (7.0%) 26 (9.6%) 109 (40.2%) 145 (53.5%)
P 0.035 0.380 0.258 0.106