Early Age of the First Myopic Spectacle Prescription, as an Indicator of Early Onset of Myopia, Is a Risk Factor for High Myopia in Adulthood

Table 2

The first spectacle age and the high myopia prevalence in adulthood.

The first spectacle age	High myopia in adulthood	Odds ratio	95% CI	value
≦12 years vs. >12 years	58.6% vs. 12.6%	9.855	5.560–17.467	<0.001
≦15 years vs. >15 years	35.7% vs. 8.5%	6.000	2.312–15.573	<0.001

CI: confidence interval. , statistically significant.