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 Videos

Does over-accomodation occur when using aircraft head-up displays?

J S Wolffsohn1, G K Edgar, H E Stone

  • 1Department of Optometry and Vision Sciences, University of Melbourne, Parkville, Victoria, Australia.

Aviation, Space, and Environmental Medicine
|July 23, 1999
PubMed
Summary
This summary is machine-generated.

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

Classification of dry eye disease subtypes.

Contact lens & anterior eye : the journal of the British Contact Lens Association·2024
Same author

The epidemiology of dry eye disease in the UK: The Aston dry eye study.

Contact lens & anterior eye : the journal of the British Contact Lens Association·2023
Same author

Risk associated with treatments for meibomian gland dysfunction.

Contact lens & anterior eye : the journal of the British Contact Lens Association·2023
Same author

Presbyopia and the aging eye: Existing refractive approaches and their potential impact on dry eye signs and symptoms.

Contact lens & anterior eye : the journal of the British Contact Lens Association·2019
Same author

Translation and cultural adaptation into Spanish of the Low Vision Quality of Life Questionnaire.

Archivos de la Sociedad Espanola de Oftalmologia·2019
Same author

Optical imaging of retina in response to grating stimuli in cats.

Experimental eye research·2013
Same journal

Goodbye to ASEM.

Aviation, space, and environmental medicine·2014
Same journal

AsMA - a worldwide organization.

Aviation, space, and environmental medicine·2014
Same journal

This month in aerospace medicine history.

Aviation, space, and environmental medicine·2014
Same journal

You're the flight surgeon: hypogonadism.

Aviation, space, and environmental medicine·2014
Same journal

You're the flight surgeon: fatigue.

Aviation, space, and environmental medicine·2014
Same journal

Manned-unmanned teaming: expanding the envelope of UAS operational employment.

Aviation, space, and environmental medicine·2014
See all related articles

Cognitive demand, not head-up displays, causes over-accommodation. Increased cognitive load and forward-looking infrared (FLIR) imagery negatively impacted task performance and accommodation response in a simulated flight environment.

Area of Science:

  • Ophthalmology
  • Human Factors Engineering
  • Aerospace Medicine

Background:

  • The role of head-up displays (HUDs) in causing over-accommodation remains debated.
  • Previous studies often used unrealistic simulations and cognitively demanding tasks, potentially confounding results.
  • Short working distances in prior experiments may also influence accommodation responses.

Purpose of the Study:

  • To investigate whether head-up displays (HUDs) or cognitive task demand primarily causes over-accommodation.
  • To assess the impact of cognitive load and forward-looking infrared (FLIR) imagery on ocular accommodation and flight task performance.
  • To determine if HUD use in a realistic simulated environment affects accommodation.

Main Methods:

  • A realistic simulated aircraft flying task was employed to evaluate ocular accommodation and performance.

Related Experiment Videos

  • Cognitive task load was systematically increased, including the use of forward-looking infrared (FLIR) imagery.
  • Measurements included accommodative response, response times, detection rates, tracking accuracy, and head-up display control.

    • Main Results:

    • Over-accommodation was minimal (0.17+/-0.03D) and occurred only with high cognitive load and FLIR imagery.
    • Increased cognitive load and FLIR significantly slowed response times for target detection.
    • Task performance metrics, including detection rate, tracking accuracy, and pitch ladder control, were negatively affected by increased cognitive demand.

    Conclusions:

    • Virtual head-up display (HUD) use in a simulated aircraft environment did not adversely affect ocular accommodation.
    • Significant inward shifts in accommodation were observed with increased cognitive demand and FLIR imagery.
    • Cognitive workload, rather than the HUD itself, appears to be the primary driver of accommodative changes.