Myopia in schoolchildren in a rural community in the State of Mexico, Mexico

Figures & data

Figure 1 Distribution of the mean SE of both eyes.

Abbreviation: SE, spherical equivalent.

Table 1 The prevalence of refractive errors

Refractive error	Definition	Percentage	95% CI
Myopia	SE ≤ −0.50 D in at least one eye	9.8	13.07–6.52
Myopia	SE ≤ −0.50 D bilateral	6.6	9.33–3.87
Hyperopia	SE ≥ +0.50 D in at least one eye	5.4	7.89–2.91
Astigmatism	Cylinder ≤ −1.50 D in at least one eye	4.4	6.66–2.14
Astigmatism	Cylinder ≤ −1.50 D bilateral	2.2	3.81–0.58

Abbreviations: CI, confidence interval; SE, spherical equivalent.

Table 2 The risk factors for myopia

Factors	Cases	Controls	P-value	OR (95% CI)
Sex
Female	13	129	0.850	1.138 (0.537–2.410)
Male	18	157
Father, mother, or both wear glasses
Yes	5	20	0.083	2.558 (0.887–7.379)
No	26	266
Use of glasses
Yes	7	10	0.00042	8.05 (2.811–23.052)
No	24	276

Abbreviations: OR, odds ratio; CI, confidence interval.