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

Vistech VCTS 6500 charts--within- and between-session reliability.

B C Reeves1, J M Wood, A R Hill

  • 1Optometry Department, Oxford Eye Hospital, Radcliffe Infirmary, United Kingdom.

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|September 1, 1991
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

Peri-operative corticosteroid supplementation for patients on therapeutic glucocorticoids: a national survey.

Anaesthesia·2020
Same author

Bioluminescence: A Rapid Indicator of Escherichia Coli O157:H7 in Selected Yogurt and Cheese Varieties.

Journal of food protection·2019
Same author

Randomized trial of near-infrared spectroscopy for personalized optimization of cerebral tissue oxygenation during cardiac surgery.

British journal of anaesthesia·2017
Same author

Adaptation of the By-Band randomized clinical trial to By-Band-Sleeve to include a new intervention and maintain relevance of the study to practice.

The British journal of surgery·2017
Same author

Cost-effectiveness of community versus hospital eye service follow-up for patients with quiescent treated age-related macular degeneration alongside the ECHoES randomised trial.

BMJ open·2016
Same author

Are lower levels of red blood cell transfusion more cost-effective than liberal levels after cardiac surgery? Findings from the TITRe2 randomised controlled trial.

BMJ open·2016

The Vistech VCTS 6500 charts show low reliability for measuring visual acuity changes. This limits their clinical use for assessing vision performance over time in eye screening.

Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Assessing visual acuity is crucial for diagnosing eye conditions.
  • Reliable charts are needed to track changes in visual performance over time.
  • The Vistech VCTS 6500 charts are used in vision screening.

Purpose of the Study:

  • To measure the reliability of the Vistech VCTS 6500 charts.
  • To compare the reliability of VCTS charts with the Bailey-Lovie visual acuity test.
  • To determine if VCTS charts can detect clinically meaningful changes in vision.

Main Methods:

  • Recruited patients with normal vision and early eye disease.
  • Administered Vistech VCTS 6500 charts and Bailey-Lovie test on two separate occasions (≥3 weeks apart).

Related Experiment Videos

  • Calculated within- and between-session reliability for the VCTS charts.

    • Main Results:

    • Vistech VCTS 6500 charts demonstrated low reliability across all tested conditions.
    • Using the mean score of three charts improved between-session reliability but still showed wide score variations.
    • The 95% range of difference scores covered at least half of the test's performance range.

    Conclusions:

    • The Vistech VCTS 6500 charts are not reliable enough for clinical measurements of visual acuity.
    • The low reliability suggests these charts are unsuitable for research studies tracking vision changes.
    • Clinicians cannot reliably estimate meaningful performance changes using VCTS charts.