Table 2.

Binocular Visual Acuity Outcomes During One Year Of Spectacle Wear in Patients Aged 3-<10 Years with Previously Untreated Bilateral Refractive Amblyopia (N=113)^*

		Baseline Binocular Acuity
	All Patients (N=113)	20/40 to 20/80 (N=94)	20/100 to 20/320 (N=19)
Change in Binocular Acuity From Baseline to One Year, lines	N (%)	N (%)	N (%)
Mean (SD)	3.9 (1.8)	3.4 (1.3)	6.3 (2.3)
Range	0.0 to 12.8	0.0 to 7.0	3.0 to 12.8
0	1 (1)	1 (1)	0 (0)
1	5 (5)	5 (6)	0 (0)
2	11 (11)	11 (13)	0 (0)
3	31 (31)	30 (36)	1 (6)
4	25 (25)	22 (26)	3 (19)
5	13 (13)	12 (14)	1 (6)
6	6 (6)	2 (2)	4 (25)
7	5 (5)	1 (1)	4 (25)
8	2 (2)	0 (0)	2 (13)
>8	1 (1)	0 (0)	1 (6)
Binocular Acuity at One Year
Mean LogMAR [Snellen equivalent]	0.11 [20/25]	0.09 [20/25]	0.18 [20/32]
(SD) LogMAR	(0.13)	(0.12)	(0.16)
Range LogMAR [Snellen equivalent]	-0.10 to 0.50 [20/16 to 20/63]	-0.10 to 0.40 [20/16 to 20/50]	-0.08 to 0.50 [20/16 to 20/63]
20/16	8 (8)	7 (8)	1 (1)
20/20	28 (28)	26 (31)	2 (13)
20/25	33 (33)	28 (33)	5 (31)
20/32	18 (18)	15 (18)	3 (19)
20/40	8 (8)	6 (7)	2 (13)
20/50	4 (4)	2 (2)	2 (13)
20/63	1 (1)	0 (0)	1 (6)
Worse than 20/63	0 (0)	0 (0)	0 (0)
Binocular Acuity 20/25 or Better At Any Follow-up Visit	79 (74)†	70 (78)†	9 (55)†

SD = standard deviation

^*13 children are missing binocular acuity at one year: 10 children with baseline binocular acuity 20/40 to 20/80 and 3 children with baseline binocular acuity 20/100 to 20/320. Therefore, the effective Ns for change in binocular acuity and for binocular acuity at one year are both 100 children overall.

^†Percentages are cumulative probabilities derived from Kaplan-Meier product-limit method.