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

Assessing retinal/neural function in patients with cataract using oscillatory displacement thresholds

B T Barrett1, P A Davison, P Eustace

  • 1Department of Vision Sciences, Glasgow Caledonian University, U.K.

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|December 1, 1994
PubMed
Summary

Oscillatory displacement threshold (ODT) measurements effectively assess retinal function, even with cataracts. This technique proves sensitive to neural disorders and can help differentiate visual impairment causes preoperatively.

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

Abstracts of the proceedings of the 20th annual meeting of the irish neurological association held on 25th-26th may, 1984.

Irish journal of medical science·2016
Same author

Disruptions to human speed perception induced by motion adaptation and transcranial magnetic stimulation.

The European journal of neuroscience·2009
Same author

Nebulised ipratropium causing a unilateral fixed dilated pupil in the critically ill patient: a report of two cases.

Critical care and resuscitation : journal of the Australasian Academy of Critical Care Medicine·2006
Same author

Overexpression of beta-carotene hydroxylase enhances stress tolerance in Arabidopsis.

Nature·2002
Same author

Pseudoexfoliation and sensorineural hearing loss.

Eye (London, England)·2002
Same author

Pupillary autonomic denervation with increasing duration of diabetes mellitus.

The British journal of ophthalmology·2001

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Vision Science

Background:

  • Cataract surgery aims to restore vision by removing the clouded lens.
  • Assessing pre-existing retinal or neural dysfunction is crucial for predicting visual outcomes.
  • Oscillatory displacement threshold (ODT) measurement is a potential tool for evaluating neural function behind cataracts.

Purpose of the Study:

  • To evaluate the predictive ability of ODT measurements.
  • To investigate the influence of age, simulated cataract, and posterior segment disorders on ODT.
  • To determine if ODT can distinguish between optical and neural causes of visual impairment in cataract patients.

Main Methods:

  • ODT was measured in subjects across different age groups.
  • Simulated cataracts were used to assess ODT's resistance to image degradation.

Related Experiment Videos

  • ODT was measured in cataract patients pre- and post-operatively.
  • ODT was assessed in patients with and without coexistent posterior segment disorders.

    • Main Results:

    • ODT increased significantly with age (p < 0.001).
    • ODT showed high resistance to simulated cataract-induced image degradation.
    • ODT was highly sensitive to the presence of retinal/neural disorders (p << 0.001).
    • Higher ODTs were observed in cataract patients with coexistent neural dysfunction compared to those without (p < 0.001).

    Conclusions:

    • ODT is a robust measure of retinal/neural function, minimally affected by cataract-induced optical changes.
    • ODT is sensitive to underlying retinal/neural pathology.
    • Preoperative ODT measurement can help differentiate the contributions of cataract and neural dysfunction to visual impairment, aiding surgical outcome prediction.