Objective Evaluation of Visual Fatigue Using Binocular Fusion Maintenance.

ABSTRACT:

Purpose

In this study, we investigated whether an individual's visual fatigue can be evaluated objectively and quantitatively from their ability to maintain binocular fusion.

Methods

Binocular fusion maintenance (BFM) was measured using a custom-made binocular open-view Shack-Hartmann wavefront aberrometer equipped with liquid crystal shutters, wherein eye movements and wavefront aberrations were measured simultaneously. Transmittance in the liquid crystal shutter in front of the subject's nondominant eye was reduced linearly, and BFM was determined from the transmittance at the point when binocular fusion was broken and vergence eye movement was induced. In total, 40 healthy subjects underwent the BFM test and completed a questionnaire regarding subjective symptoms before a

SUBMITTER: Hirota M 

PROVIDER: S-EPMC5868862 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature