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Purpose: Previous studies have reported a naso-temporal asymmetry for global motion perception, favoring nasalward motion, is present in children and adults with a history of unilateral enucleation. Deprivation amblyopia from unilateral cataract or other forms of unilateral visual impairment results in a less complete form of monocular deprivation. We investigated whether this directional asymmetry is also present in the fellow eye of children with deprivation amblyopia.

Methods: 25 children (10.33+ 2.44 years) with deprivation amblyopia (VA: 0.5 to 1.6 logMAR) from a history of monocular visual deprivation and 30 age-matched controls (9.85+ 3.68 years) participated in this study. Global motion perception for horizontal translation motion was measured for the fellow eye in the deprivation amblyopia group and in a random eye of the control group. Motion coherence thresholds (MCT) for nasalward and temporalward …