Fig. 1From: Ocular and visual perceptive factors associated with treatment outcomes in patients with anisometropic amblyopiaMeasurement of PEP. Patients performed task while wearing polarized glasses, which allowed right eye to see a circle and left eye to see a cross (A). They were instructed to place the cross into the circle’s center by using a computer mouse (B). The horizontal and vertical deviation were automatically recorded by the systemBack to article page