Table 4.

Prevalence of myopia (≤ −0.5 diopter spherical equivalent) by race-ethnicity, gender, and age, NHANES 1999–2004.

	Prevalence and 95% CI* for ages:
	20–39 years	40–59 years	60 years and older	20 years and older	40 years and older
Total	50.2	50.1	26.5	44.7	41.0
	47.8–52.7	47.8–52.4	24.0–29.0	43.0–46.4	39.2–42.9
Males	46.6	50.2	29.5	44.0	42.3
	43.6–49.7	47.7–52.7	26.4–32.7	42.1–45.9	40.1–44.5
Females	53.9	50.0	23.9	45.5	40.0
	51.2–56.6	47.1–52.9	20.3–27.4	43.6–47.4	37.7–42.3
Non-Hispanic	49.0	44.3	23.9	41.5	36.5
black	45.6–52.4	39.4–49.2	20.3–27.6	38.7–44.2	32.8–40.2
Males	43.2	44.6	26.6	39.8	37.6
	37.5–48.8	38.8–50.3	22.1–31.0	36.2–43.5	33.3–42.0
Females	53.8	44.2	22.1	42.9	35.7
	49.1–58.4	37.5–50.8	16.4–27.7	39.2–46.5	30.6–40.7
Non-Hispanic	51.3	52.6	26.4	46.0	42.6
white	48.6–54.0	49.8–55.4	23.5–29.3	44.0–48.0	40.2–44.9
Males	47.6	51.8	29.4	44.9	43.2
	43.8–51.3	48.5–55.0	25.7–33.0	42.5–47.3	40.4–46.0
Females	55.1	53.5	23.8	47.3	42.1
	51.7–58.5	50.0–57.1	19.8–27.7	44.8–49.8	39.2–45.1
Mexican	47.4	41.8	27.8	40.8	36.4
American	43.8–51.0	38.6–44.9	24.1–31.4	38.5–43.0	33.7–39.1
Males	47.0	38.8	32.0	40.5	36.2
	42.1–52.0	34.8–42.8	26.7–37.4	37.3–43.6	32.5–39.8
Females	47.8	45.0	23.9	41.2	36.9
	44.0–51.8	40.1–49.8	18.9–28.9	38.4–44.1	33.3–40.4
Other	48.8	42.0	30.2	41.9	37.4
	42.0–55.5	33.8–50.1	23.5–36.9	37.6–46.3	31.6–43.2
Males	44.8	50.4	34.1	44.4	44.1
	35.2–54.3	39.5–61.2	21.6–46.5	38.6–50.2	35.7–52.5
Females	53.0	36.0	27.5	40.7	32.7
	45.6–60.3	27.3–44.6	18.1–36.9	35.7–45.8	26.7–38.8

^*CI: Confidence interval.