. Author manuscript; available in PMC: 2016 Jan 1.

Published in final edited form as: Am J Ophthalmol. 2014 Sep 28;159(1):64–70.e2. doi: 10.1016/j.ajo.2014.09.028

Table 2.

Stereopsis at 4.5 Years versus Age at Surgery and Visual Acuity at 4.5 Years in Patients in the Infant Aphakia Treatment Study

Characteristic	Stereopsis at Age 4.5				p-value
	Yes (n = 28)		No (n = 82^†)
	Median	IQR^*	Median	IQR^*
Age at Surgery (months)	1.2	1.0–2.0	2.4	1.2–3.4	0.002
Visual Acuity at 4.5 Years (logMAR) (Snellen)	0.30 20/40	0.20–0.75 20/32–20/112	1.10 20/252	0.50–1.70 20/63–20/1002	0.0003

VA = Visual Acuity, IQR = Interquartile Range

^†

For VA, the sample size for patients without stereopsis was 81 because VA could not be measured for one patient due to developmental delay.