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

Control theory approach to accommodation and vergence

J P Carroll

    American Journal of Optometry and Physiological Optics
    |August 1, 1982
    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

    Objective measurement of resolution in film images.

    Applied optics·2010
    Same author

    Optimizing holographic interferometric fringe display contrast.

    Applied optics·2010
    Same author

    Spring survey of the parasite Heterakis gallinarum in wild-living pheasants in Britain.

    The Veterinary record·2000
    Same author

    Accelerated development of polyoma tumors and embryonic lethality: different effects of p53 loss on related mouse backgrounds.

    Cell growth & differentiation : the molecular biology journal of the American Association for Cancer Research·2000
    Same author

    Wild-derived inbred mice have a novel basis of susceptibility to polyomavirus-induced tumors.

    Journal of virology·1999
    Same author

    Radiation-resistant and radiation-sensitive forms of host resistance to polyomavirus.

    Journal of virology·1999
    Same journal

    Visual decrement with deposit accumulation of HEMA contact lenses.

    American journal of optometry and physiological optics·1988
    Same journal

    Stiles-Burch two-degree color mixture data.

    American journal of optometry and physiological optics·1988
    Same journal

    Undercorrection and myopia development.

    American journal of optometry and physiological optics·1988
    Same journal

    The International Optometric and Optical League.

    American journal of optometry and physiological optics·1988
    Same journal

    Quantitative photorefraction using an off-center flash source.

    American journal of optometry and physiological optics·1988
    Same journal

    An objective VER assessment of visual acuity compared with subjective measures.

    American journal of optometry and physiological optics·1988
    See all related articles

    This study models the human eye's focusing (accommodative) and alignment (vergence) systems. Including vergence accommodation reveals system instabilities and alters the zone of clear binocular vision.

    Area of Science:

    • Ophthalmology
    • Control Theory
    • Visual Neuroscience

    Background:

    • The human visual system relies on coordinated accommodation and vergence for clear, single binocular vision.
    • Existing models often simplify the interplay between these two systems.

    Purpose of the Study:

    • To develop and analyze a control theory model of the human accommodative and vergence systems.
    • To investigate the impact of including vergence accommodation in the model.

    Main Methods:

    • A negative feedback control theory model was developed for the accommodative and vergence systems.
    • Linear time-invariant operators were assumed for system controllers.
    • Time-independent stimuli were used for analysis.

    Main Results:

    Related Experiment Videos

    • Neglecting vergence accommodation aligns the model with classical graphical analysis.
    • Including vergence accommodation leads to significant changes, including disparity vergence not equaling dissociated phoria.
    • The model predicts alterations in the zone of single, clear, binocular vision and introduces system instabilities.

    Conclusions:

    • Vergence accommodation is a critical factor influencing binocular vision dynamics.
    • The developed model highlights potential instabilities and shifts in visual perception not captured by simpler models.