The Effect of Contrast Reversal on Peripheral Visual Acuity.

ABSTRACT:

Purpose

Patients with central vision loss must rely upon regions of their unaffected peripheral retina to carry out fine-scale visual tasks. We aimed to determine the conditions under which contrast reversal of targets and/or backgrounds may act to improve visual acuity in the peripheral field.

Methods

Ten participants with normal or corrected-to-normal vision performed a visual acuity task in which they were asked to identify the orientation of a letter-C target presented at 10° in the right visual field. Minimum letter size thresholds were measured for static (black or white) and contrast-reversing (8.5 or 17 Hz) targets presented on a uniform mean luminance background, a static patterned background, or a dynamic version of the patterned background, which was contrast reve

SUBMITTER: Cassanello CR 

PROVIDER: S-EPMC12369918 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature