Clinical exhibition of increased accommodative loads for binocular fusion in patients with basic intermittent exotropia

Table 5 Accommodative load in the left eye of normal controls

Target distance	Accommodative load		Difference ^a, D	p ^*
Target distance	Monocular fixation, D	Binocular fixation, D	Difference ^a, D	p ^*
6 m	−0.27 ± 1.04 (−2.69 to 1.31)	−0.30 ± 0.92 (−2.68 to 1.06)	0.03 ± 0.38 (−0.56 to 1.06)	0.969
50 cm	−1.23 ± 0.77 (−2.69 to 0.63)	−1.27 ± 0.78 (−2.62 to 0.25)	0.04 ± 0.47 (−1.07 to 0.70)	0.514
33 cm	−1.97 ± 0.79 (−2.87 to −0.06)	−1.97 ± 0.77 (−3.06 to −0.38)	0.00 ± 0.45 (−0.94 to 0.69)	0.733
20 cm	−3.58 ± 1.19 (−4.62 to 0.19)	−3.56 ± 0.98 (−5.13 to −1.25)	−0.03 ± 0.78 (−1.25 to 1.45)	0.776

D diopters
^*Wilcoxon’s signed rank test
^a Positive values indicate an increase in accommodative load with binocular viewing compared to monocular viewing

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