Disruption of Positional Encoding at Small Separations in the Amblyopic Periphery.

ABSTRACT:

Purpose

Positional judgments in amblyopia are impaired more at the center of the visual field than in the periphery. However, the effects of visual field position frequently are confounded with stimulus separation. The purpose of this experiment was to parse the effects of stimulus separation and eccentricity on the positional deficit in amblyopia.

Methods

Subjects adjusted the positions of stimuli of varying separations on isoeccentric arcs. The task was simultaneous bisection and alignment of broadband, high-contrast, uncrowded targets with reference to central fixation. Ten strabismic amblyopes and five normally sighted controls performed the task dichoptically; a subset of amblyopes performed the task monocularly with the amblyopic eye. Spread (inverse of precision) and

SUBMITTER: Hussain Z 

PROVIDER: S-EPMC9034712 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature