Binocular Summation and Suppression of Contrast Sensitivity in Strabismus, Fusion and Amblyopia

Purpose: Amblyopia and strabismus affect 2-5% of the population and cause a broad range of visual deficits. The response to treatment is generally assessed using visual acuity, which is relatively insensitive to binocular vision gains and may therefore underestimate binocular vision deficits in these patients. The contrast sensitivity function (CSF) generally takes longer to assess than visual acuity, but it is better correlated with improvement in a range of visual tasks and, notably, with improvements in binocular vision. The present study aims to assess monocular and binocular CSFs in amblyopia and strabismus patients. Methods: Both monocular CSFs and the binocular CSF were assessed for subjects with amblyopia (n=11), strabismus without amblyopia (n=20), and normally sighted controls (n=24) using a tablet-based implementation of the quick CSF, which can assess a full CSF in
Source: Frontiers in Human Neuroscience - Category: Neuroscience Source Type: research