Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: Jun 13, 2025

Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System
05:10

Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

Published on: March 17, 2023

2.6K

Automated visual acuity estimation by optokinetic nystagmus using a stepped sweep stimulus.

Jason Turuwhenua1,2, Zaw LinTun1, Mohammad Norouzifard1

  • 1Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
|September 11, 2024
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Topological expansion of Boehm's brushes via structured light.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Parietal thickness predicts middle temporal area (V5) motion responses in 7-year-old children born very preterm.

Cerebral cortex (New York, N.Y. : 1991)·2026
Same author

Eye Dominance and Testing Order Effects in the Circularly-Oriented Macular Pigment Optical Density Measurements.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
Same author

A Comparison of Centroid Tracking and Image Phase for Improved Optokinetic Nystagmus Detection.

Journal of eye movement research·2026
Same author

Mother and child health 4.5 years after gestational diabetes mellitus managed using tight or less tight targets for glycaemic control: Post-hoc follow-up study of the TARGET trial.

PLoS medicine·2026
Same author

Utility, safety, and accessibility of phone call follow-up in strabismus surgery postoperative care.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2025

An automated visual acuity (VA) system using optokinetic nystagmus (OKN) accurately detects reduced VA in adults. This new VA-OKN method strongly correlates with standard eye exams, showing promise for broader use.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Biomedical Engineering

Background:

  • Visual acuity (VA) measurement is crucial for eye health assessment.
  • Current methods may be challenging for certain patient populations.
  • Optokinetic nystagmus (OKN) offers a potential alternative for objective VA assessment.

Purpose of the Study:

  • To introduce and evaluate an automated system for objective visual acuity measurement using optokinetic nystagmus (VA-OKN).
  • To assess the sensitivity and specificity of the VA-OKN system in detecting reduced visual acuity in adults.
  • To compare the performance of VA-OKN with the established Early Treatment of Diabetic Retinopathy Study (ETDRS) chart (VA-ETDRS).

Main Methods:

  • Adults with normal (n=12) and reduced (n=11) VA (VA-ETDRS > 0.20 logMAR) underwent monocular VA-OKN measurements.
Keywords:
eye movementseye trackingoptokinetic nystagmusvision screeningvisual acuity

More Related Videos

Author Spotlight: An Accurate and Quantitative Approach to Study Visual Feature Selectivity of the Optokinetic Reflex in Mice
09:28

Author Spotlight: An Accurate and Quantitative Approach to Study Visual Feature Selectivity of the Optokinetic Reflex in Mice

Published on: June 23, 2023

2.5K
The Optokinetic Response as a Quantitative Measure of Visual Acuity in Zebrafish
04:56

The Optokinetic Response as a Quantitative Measure of Visual Acuity in Zebrafish

Published on: October 9, 2013

20.5K

Related Experiment Videos

Last Updated: Jun 13, 2025

Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System
05:10

Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

Published on: March 17, 2023

2.6K
Author Spotlight: An Accurate and Quantitative Approach to Study Visual Feature Selectivity of the Optokinetic Reflex in Mice
09:28

Author Spotlight: An Accurate and Quantitative Approach to Study Visual Feature Selectivity of the Optokinetic Reflex in Mice

Published on: June 23, 2023

2.5K
The Optokinetic Response as a Quantitative Measure of Visual Acuity in Zebrafish
04:56

The Optokinetic Response as a Quantitative Measure of Visual Acuity in Zebrafish

Published on: October 9, 2013

20.5K
  • An automated system presented drifting vanishing discs of varying sizes (0.00-1.00 logMAR) to elicit OKN.
  • Eye-tracking data identified the onset/cessation of OKN to determine VA-OKN, averaged across multiple sweeps.

    • Main Results:

    • The VA-OKN system demonstrated 100% sensitivity and specificity in detecting reduced VA at the 0.20 logMAR threshold.
    • No significant difference was found between VA-OKN and VA-ETDRS measurements (p=0.55).
    • Strong correlation and agreement were observed between VA-OKN and VA-ETDRS (r²=0.84, ICC=0.90).

    Conclusions:

    • Automated VA-OKN effectively identifies visual acuity deficits in adults.
    • VA-OKN is a reliable and objective method, strongly correlating with the gold-standard VA-ETDRS.
    • The VA-OKN system shows potential for assessing visual acuity in cognitively impaired adults and pre-verbal children.