Figure 2. Rate of Improvement in Amblyopic Eye Visual Acuity.

Amblyopic eye visual acuity in each group at baseline, 5 weeks, 10 weeks, and 18 weeks. The point estimates and 95% confidence intervals for the mean change from baseline are shown. A log transformation for time (plus 0.5) was used to form a linear relationship between visual acuity and time. SD = standard deviation; logMAR = logarithm of the minimum angle of resolution; A = Atropine-only group; A + P = Atropine plus plano lens group.

20/160								1%†
20/125			2%*	1%*				1%*
20/100	8%	17%		2%	1%	2%	2%	1%
20/80	16%	17%	4%	4%	2%	2%	2%	5%
20/63	32%	31%	12%	11%	6%	8%	5%	7%
20/50	27%	19%	27%	15%	17%	7%	7%	8%
20/40	18%	17%	20%	24%	24%	19%	21%	10%
20/32			21%	33%	27%	31%	33%	27%
20/25			11%	11%	13%	21%	15%	22%
20/20			4%		9%	9%	13%	14%
20/16							1%	5%
Mean logMAR	0.47	0.50	0.32	0.31	0.26	0.24	0.23	0.22
(SD)	0.12	0.13	0.16	0.15	0.15	0.16	0.16	0.20
Mean Lines	--	--	1.5	1.9	2.1	2.6	2.4	2.8
Change
(SD)			1.3	1.3	1.2	1.5	1.4	1.8
Treatment Group	A	A + P	A	A + P	A	A + P	A	A + P
Visit	Baseline		5 Weeks		10 Weeks		18 Weeks

^*

Amblyopic eye visual acuity at 18 weeks was 1 line worse than at baseline, but then better than or equal to baseline upon retesting during the same visit; however, by protocol the first acuity test was counted as the “outcome” examination.

^†

Amblyopic eye visual acuity decreased from 20/80 at baseline to 20/160 at 18 weeks for an unknown reason.