. Author manuscript; available in PMC: 2008 Jul 1.

Published in final edited form as: Invest Ophthalmol Vis Sci. 2007 Jul;48(7):3115–3125. doi: 10.1167/iovs.06-1009

Table 2.

Characteristics of Strabismus in Years 1–3

	Year
Characteristic	1 (n= 48)	2 (n = 62)	3 (n = 47)
Frequency
Constant	26 (54%)	41 (66%)	31 (66%)
Intermittent	22 (46%)	21 (34%)	16 (34%)
Direction
Esotropia	29 (60%)	40 (65%)	33 (70%)
Exotropia	18 (38%)	21 (34%)	14 (30%)
Unknown	1 (2%)	1 (1%)	0
Magnitude^*
<10Δ	5 (10%)	13 (21%)	6 (13%)
≥10Δ	42 (88%)	48 (77%)	40 (85%)
Unknown	1 (2%)	1 (1%)	1 (2%)
Amblyopia^†
Present	16 (33%)	22 (35%)	22 (47%)
Absent	32 (67%)	40 (65%)	25 (53%)
Significant refractive error^‡
Present	24 (50%)	34 (55%)	32 (68%)
Absent	24 (50%)	28 (45%)	15 (32%)

Maximum magnitude of near and distance cover testing.

^†

As defined for Groups 1 and 2 in Table 1.

^‡

Refractive error meeting the criteria listed in group 1, 2, or 3 in Table 1.