Table 2

Prevalence of visual impairment, low vision, and blindness by sex and age based on best corrected visual acuity*

	Age (years)	No	Visual impairment†	Low vision†	Blindness†
*Age and sex standardised to the 1996 Tehran population.
†Percentage (95% CI).
‡Data on visual acuity not available for five participants.
Men
	1–19	812	0.26 (0.06 to 1.06)	0.26 (0.06 to 1.06)	0
	20–39	492	0.91 (0.13 to 1.70)	0.73 (0.27 to 1.94)	0.18 (0.03 to 1.30)
	40–59	394	0.72 (0.23 to 2.26)	0.50 (0.12 to 2.06)	0.22 (0.03 to 1.54)
	60+	207	10.94 (6.86 to 15.01)	8.09 (4.71 to 11.47)	2.85 (0.61 to 5.09)
Women
	1–19	901	0	0	0
	20–39	923	0.32 (0.10 to 1.01)	0.32 (0.10 to 1.01)	0
	40–59	653	1.69 (0.73 to 2.65)	1.38 (0.51 to 2.26)	0.31 (0.08 to 1.24)
	60 +	178	14.35 (9.13 to 19.57)	11.59 (6.68 to 16.51)	2.75 (0.39 to 5.11)
Men and women
	1–19	1713	0.13 (0.03 to 0.54)	0.13 (0.03 to 0.54)	0
	20–39	1415	0.56 (0.18 to 0.94)	0.53 (0.13 to 0.93)	0.09 (0.01 to 0.70)
	40–59	1047	1.30 (0.64 to 1.96)	0.92 (0.36 to 1.48)	0.26 (0.08 to 0.82)
	60+	385	12.70 (9.24 to 16.16)	9.75 (6.81 to 12.68)	2.80 (1.21 to 4.39)
All ages
	Men	1905	1.37 (0.91 to 1.83)	1.05 (0.67 to 1.44)	0.32 (0.10 to 0.53)
	Women	2655	1.42 (0.98 to 1.86)	1.17 (0.77 to 1.57)	0.25 (0.07 to 0.43)
All participants		4560‡	1.39 (1.07 to 1.71)	1.11 (0.84 to 1.39)	0.28 (0.14 to 0.42)