Fig. 2From: Binocular summation of visual acuity and contrast sensitivity in children with intermittent exotropiaPreoperative and postoperative binocular/monocular visual acuity and binocular summation at 100% contrast and at 2.5% contrast. a Binocular/monocular visual acuity. b Binocular summation. *, P < 0.05, **, P < 0.01, ***, P < 0.001Back to article page