Effect of Genetic-Environmental Interaction on Chinese Childhood Myopia

Table 4

Effect of environmental and genetic factors on myopia occurrence.

Parents with or without myopia	Diopters in children (quartile)			Myopia rate in children	EGI
	25th	50th	75th
With myopia	−0.50	0.40	0.90	26.3%	0.125
Without myopia	0.00	0.60	1.10	13.8%
One-side parent with myopia	−0.10	0.50	0.90	18.7%
P	<0.001			<0.001

EGI comprehensively reflects both the effects of genetic factors and environmental factors.