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

Stability of tonic vergence.

S K Fisher1, K J Ciuffreda, B Tannen

  • 1Department of Vision Sciences, Schnurmacher Institute for Vision Research, SUNY/State College of Optometry, New York 10010.

Investigative Ophthalmology & Visual Science
|October 1, 1988
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

Changes in glycaemic control, blood pressure and lipids 5 years following laparoscopic adjustable gastric banding combined with medical care in patients with type 2 diabetes: a longitudinal analysis.

Clinical obesity·2018
Same author

Corrigendum to "An "all 5 mm ports" technique for laparoscopic day-case anti-reflux surgery: A consecutive case series of 205 patients" [Int. J. Surg. 35 (2016) 214-217].

International journal of surgery (London, England)·2017
Same author

An "all 5 mm ports" technique for laparoscopic day-case anti-reflux surgery: A consecutive case series of 205 patients.

International journal of surgery (London, England)·2016
Same author

Day surgery for achalasia cardia: Time for consensus?

Annals of the Royal College of Surgeons of England·2016
Same author

A prospective cross-sectional study of laparoscopic subtotal Lind fundoplication for gastro-oesophageal reflux disease--a durable and effective anti-reflux procedure.

International journal of surgery (London, England)·2014
Same author

Spatial frequency discrimination in anisometropic and strabismic amblyopia.

Applied optics·2010
Same journal

Dual-Hit Myopia Mechanism Unveiled by Multi-Omics: Opn1mw Deficiency Primed the Retina for Exaggerated Response to Environmental Defocus.

Investigative ophthalmology & visual science·2026
Same journal

Psychometric Performance of Children With Amblyopia During a Tablet-Based Adaptive Visual Acuity Assessment.

Investigative ophthalmology & visual science·2026
Same journal

The Molecular Basis of Ocular Aging: Mechanisms, Pathologies, and Emerging Therapeutics.

Investigative ophthalmology & visual science·2026
Same journal

Sensory Eye Dominance Remains Stable Across Binocular Combination and Rivalry in Normal and Anisometropic Amblyopic Vision.

Investigative ophthalmology & visual science·2026
Same journal

Exosome-Associated Gene Network and the Role of SPP1 in Herpes Stromal Keratitis and the Therapeutic Modulation by Ursolic Acid.

Investigative ophthalmology & visual science·2026
Same journal

Nonlinear Associations of Estimated Glucose Disposal Rate With Incident Age-Related Eye Diseases: Implications for Metabolic Risk Stratification.

Investigative ophthalmology & visual science·2026
See all related articles

Tonic vergence, a measure of eye alignment, remains stable during daily and weekly periods under normal viewing conditions. However, prolonged darkness causes eye position to become less convergent, indicating reduced stability without visual stimuli.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Vision Science

Background:

  • Tonic vergence is crucial for maintaining binocular eye alignment.
  • Understanding tonic vergence stability is important for diagnosing and managing visual disorders.

Purpose of the Study:

  • To assess the stability of tonic vergence over daily and weekly timescales.
  • To investigate the effect of prolonged darkness on tonic vergence.

Main Methods:

  • Tonic vergence was monitored at regular intervals over a 10-hour day and 19 weeks.
  • Measurements were also taken during a 112-minute period in complete darkness.

Main Results:

  • Tonic vergence demonstrated significant stability under normal viewing conditions throughout the day and over weeks.

Related Experiment Videos

  • In total darkness, tonic vergence showed a significant decreasing trend, indicating reduced stability.

    • Conclusions:

    • Tonic vergence is stable under typical visual conditions.
    • Visual stimuli are important for maintaining tonic vergence stability; its absence leads to decreased convergence over time.