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

New, sensitive window on abnormal spatial vision: rarebit probing.

Lars Frisén1

  • 1Department of Ophthalmology, Institute of Clinical Neuroscience, Göteborg University, SE-413 45, Göteborg, Sweden. lars.frisen@neuro.gu.se

Vision Research
|July 20, 2002
PubMed
Summary

A new microdot visual field test shows superior sensitivity for detecting early neuro-visual damage compared to standard methods. This enhanced test identifies subtle defects missed by current clinical approaches.

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

Swelling of the Optic Nerve Head: A Backstage View of a Staging Scheme.

Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society·2017
Same author

Dichoptic Reaction Times Open a New Window on Functional Loss of Vision.

Ophthalmology·2016
Same author

Self-Testing of Vision in Age-Related Macula Degeneration: A Longitudinal Pilot Study Using a Smartphone-Based Rarebit Test.

Journal of ophthalmology·2015
Same author

New rarebit vision test captures macular deficits hidden to acuity tests.

Acta ophthalmologica·2015
Same author

Identification of functional visual field loss by automated static perimetry.

Acta ophthalmologica·2014
Same author

Rapid assessment of neurovisual integrity using multiple rarebits.

Ophthalmology·2013

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Diagnostics

Background:

  • Standard clinical visual field tests often lack sensitivity for detecting low to moderate neuro-visual damage.
  • Existing tests may be less effective due to targets encompassing numerous receptive fields.

Purpose of the Study:

  • To evaluate a novel microdot perimetry test for improved detection of subtle visual field defects.
  • To compare the sensitivity of microdot perimetry against high-pass resolution perimetry in patients with visual field damage.

Main Methods:

  • A new perimetry technique using briefly exposed, high-contrast microdots was developed.
  • Multiple visual field areas were repeatedly probed with dynamic microdot positions.
  • Performance was assessed in normal subjects and patients with varying degrees of visual field defects.

Related Experiment Videos

Main Results:

  • Normal subjects achieved a median response rate of 96.0% to microdot probes.
  • Patients with visual field defects missed more probes in affected areas, correlating with defect depth.
  • Microdot perimetry revealed defects 1.8 times larger on average than high-pass resolution perimetry in patients with minor chiasmal lesions.

Conclusions:

  • Microdot perimetry demonstrates enhanced sensitivity for detecting early and minor neuro-visual damage.
  • This novel approach offers a more precise method for diagnosing subtle visual field impairments.
  • The findings suggest microdot perimetry could significantly improve the early diagnosis of visual field defects.