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. Author manuscript; available in PMC: 2014 Aug 14.
Published in final edited form as: J Pediatr Ophthalmol Strabismus. 2014 Feb 12;51(2):100–104. doi: 10.3928/01913913-20140205-02

TABLE 1.

Mean Binocular Summation Scores for Luminance Detection for Strabismic and Control Patients at 0 and 20 μdeg2 Levels if Noisea

Comparision 0 μdeg2
10 μdeg2
20 μdeg2
Mean ± SD P Mean ± SD P Mean ± SD P
ET vs control 0.94 ± 0.3 vs 1.1 ± 0.3 .40 0.8 ± 0.3 vs 1.0 ± 0.3 .10 1.08 ± 0.5 vs 1.1 ± 0.3 .50
XT vs control 0.99 ± 0.3 vs 1.1 ± 0.2 .30 0.7 ± 0.3 vs 1.0 ± 0.3 .02 0.75 ± 0.3 vs 1.1 + 0.4 .30
Strabismus vs control 0.96 ± 0.3 vs 1.1 ± 0.3 .30 0.8 ± 0.2 vs 1.1 ± 0.3 .02 1.0 ± 0.4 vs 1.2 ± 0.4 .80

SD = standard deviation; ET = esotropia; XT = exotropia

a

Binocular summation was calculated as a ratio between the binocular and better eye scores for contrast sensitivity within visual noise.