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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

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Published on: July 21, 2020

A method for quantifying visual field inhomogeneities.

Jennifer E Anderson¹, E Leslie Cameron², Michael W Levine³

¹Department of Psychology, University of Illinois at Chicago, United States.

Vision Research

|October 7, 2014

Summary

Visual field performance varies, with known horizontal-vertical anisotropy and vertical asymmetry. A new elliptical model offers a more accurate assessment of these visual field inhomogeneities, improving upon circular models.

Keywords:

Ellipse HVA VMA Vertical asymmetry Visual field inhomogeneity

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Area of Science:

Ophthalmology
Neuroscience
Visual Science

Background:

Visual field performance is not uniform, exhibiting known inhomogeneities like Horizontal-Vertical Anisotropy (HVA), Vertical Asymmetry (VA), and Vertical Meridian Asymmetry (VMA).
Previous methods often compare visual field data to a homogeneous circular model, potentially overestimating effects at the 'North' and 'South' locations.

Purpose of the Study:

To introduce and validate an alternative method for assessing visual field inhomogeneities.
To compare the efficacy of an elliptical model against a traditional circular model for analyzing visual field performance variations.

Main Methods:

Developing a novel analytical approach using an elliptical model to assess visual field performance.
Comparing the results obtained from the elliptical model with those from a standard circular model.

Main Results:

The elliptical model provides a more robust analysis of visual field inhomogeneities.
This new method avoids the overestimation of performance deficits at the 'North' and 'South' locations observed with circular models.

Conclusions:

An elliptical model offers a superior framework for understanding visual field performance variations.
This refined analytical approach enhances the accuracy of characterizing visual field inhomogeneities.