. Author manuscript; available in PMC: 2012 May 1.

Published in final edited form as: Ophthalmology. 2010 Dec 13;118(5):805–811. doi: 10.1016/j.ophtha.2010.09.015

Table 1.

Prevalence of Refractive Error

	Total Study Population N=4,509	Refractive Error in at least 1 Eye N (%) 2,875 (63.8%)	Refractive Error in Both Eyes N (%) 2,307 (51.2%)
Age Group
40–49 years	1590	702 (44.2%)	537 (33.8%)
50–59 years	1346	894 (66.4%)	699 (51.9%)
60–69 years	921	707 (76.8%)	590 (64.1%)
70 + years	652	572 (87.7%)	481 (73.8%)
P for trend		<.0001	<.0001
Sex
Female	2756	1865 (67.7%)	1516 (55.0%)
Male	1753	1010 (57.6%)	791 (45.1%)
X² p value^*		<.0001	<.0001

Age-adjusted p value