Table 2.

Improvement of vision impairment in better seeing eye with refractive correction by age category

	Age category (years)
	5–6	7–9	10–12	13–15	16–17	All
UCVA ≤20/40	n=76	n=143	n=430	n=1220	n=155	n=2024
≥2 lines improvement	33 (43.4%)	130 (90.9%)	421 (97.9%)	1212 (99.3%)	154 (99.4%)	1950 (96.3%)
≥3 lines improvement	20 (26.3%)	99 (69.2%)	394 (91.6%)	1178 (96.6%)	152 (98.1%)	1843 (91.1%)
UCVA ≤20/50	n=23	n=89	n=327	n=995	n=128	n=1562
≥2 lines improvement	19 (82.6%)	85 (95.5%)	322 (98.5%)	990 (99.5%)	128 (100%)	1544 (98.9%)
≥3 lines improvement	13 (56.5%)	79 (88.8%)	318 (97.3%)	984 (98.9%)	127 (99.2%)	1521 (97.4%)
UCVA ≤20/63	n=10	n=56	n=226	n=758	n=107	n=1157
≥2 lines improvement	8 (80.0%)	53 (94.6%)	225 (99.6%)	756 (99.7%)	107 (100%)	1149 (99.3%)
≥3 lines improvement	7 (70.0%)	50 (89.3%)	223 (98.7%)	752 (99.2%)	106 (99.1%)	1138 (98.4%)

UCVA, uncorrected visual acuity.