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A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

Published on: February 11, 2014

Vision assessment using the NIH Toolbox.

Rohit Varma¹, Roberta McKean-Cowdin, Susan Vitale

¹Department of Ophthalmology, University of Southern California Keck School of Medicine, Los Angeles, CA, USA. rvarma@usc.edu

|March 13, 2013

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This study developed a reliable and valid visual acuity test for the NIH Toolbox, assessing visual health and quality of life. The new tool is cost-effective for broad implementation in neurological and behavioral assessments.

Area of Science:

Ophthalmology
Neuroscience
Psychometrics

Background:

Vision is crucial for perceiving the environment.
Visual acuity is a key indicator of visual health.
Assessing visual function is important for overall health-related quality of life.

Purpose of the Study:

To develop and validate a visual acuity test for the NIH Toolbox for Assessment of Neurological and Behavioral Function.
To assess the impact of visual impairments on health-related quality of life.
To create an accessible and cost-effective vision assessment tool.

Main Methods:

Developed an easy-to-use software program for visual acuity testing, adapted from the E-ETDRS protocol.
Administered a modified version with letters H, O, T, V to children under 7 years.

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A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

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Created a 53-item survey to evaluate vision-targeted, health-related quality of life.

Main Results:

The Toolbox visual acuity test demonstrated very good reliability and validity.
The developed software provides a user-friendly method for acuity assessment.
A comprehensive quality of life survey was successfully created.

Conclusions:

The NIH Toolbox visual acuity test is a reliable and valid measure for assessing visual function.
The tool supports the assessment of visual health and its impact on quality of life.
This vision assessment is suitable for broad implementation in neurological and behavioral research.