. 2016 Jun 7;16:77. doi: 10.1186/s12886-016-0260-y

Table 4.

Accommodative load in the right 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	−0.42 ± 0.76 (−2.13 to 0.38)	−0.33 ± 0.79 (−2.50 to 0.81)	0.09 ± 0.28 (−0.69 to 0.37)	0.254
50 cm	−1.24 ± 0.64 (−2.63 to −0.38)	−1.27 ± 0.49 (−2.63 to −0.75)	0.03 ± 0.36 (0.82 to 0.44)	0.432
33 cm	−2.00 ± 0.61 (−2.81 to −0.69)	−2.10 ± 0.49 (−2.94 to −1.37)	0.10 ± 0.38 (−0.50 to 0.69)	0.348
20 cm	−3.80 ± 0.78 (−5.13 to 2.50)	−3.82 ± 0.87 (−4.93 to −2.13)	0.03 ± 0.89 (−1.38 to 1.75)	0.932

D diopters

^* Wilcoxon’s signed rank test

^a Positive values indicate an increase in accommodative load with binocular viewing compared to monocular viewing