Table 2.

Distribution of Refractive Errors by Age.

Refractive Error (D)	Age Range
	40–49	50–59	60–69	70–79	80–89
<−5.25	2.10%	1.80%	1.20%	0%	0%
−5.00 to −3.25	4.10%	4.30%	2.40%	2.80%	9%
−3.00 to −0.75	14.80%	8.60%	4.20%	6.90%	4%
−0.50 to 0.50	52.30%	29.60%	21.70%	19.40%	22%
0.75–3.00	25.10%	52.10%	57.80%	61.10%	57%
3.25–5.00	0.80%	3.20%	12.00%	9.70%	9%
>5.25	0.80%	0.40%	0.60%	0%	0%
Mean RE (SD)	0.127 (1.86)	0.737 (2.38)	1.76 (1.77)	1.72 (1.86)	1.55 (1.93)
Mean cylinder (IQR)	0.5 (0.50)	0.5 (0.50)	0.75 (0.75)	0.75 (0.75)	0.75 (0.50)

D=diopters; SD=standard deviation; IQR=interquartile range.