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Test-Retest Variability of Quick Contrast Sensitivity Function Testing

NCT02177669 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 100

Last updated 2017-04-11

No results posted yet for this study

Summary

The contrast sensitivity function (CSF) provides a comprehensive characterization of spatial vision and predicts functional vision better than visual acuity, but long testing times prevent its psychophysical assessment in clinical applications. Dr. Luis Lesmes et al. (2010) developed the qCSF method to obtain precise CSF measurements in only 30-50 trials using a computerized software program that presents letters on a large monitor that are identified by a patient similar to typical visual acuity testing with an eye chart. The quick CSF method is a Bayesian adaptive method that estimates the full shape of the CSF, and the test duration is only about 3-6 minutes. Some preliminary testing has been performed at other sites with this test in patients with vision loss due to amblyopia and glaucoma, but data from individuals without eye disease who have normal visual acuity has not been systematically collected with the latest version of this test procedure across a wide range of ages. In addition, we aim to gain a better understanding of the typical test-retest variability that is obtained between-sessions that are about a week apart from individuals with good ocular health and visual acuity.

Conditions

  • Healthy

Interventions

OTHER

quick Contrast Sensitivity Function test

Sponsors & Collaborators

  • Adaptive Sensory Technology

    collaborator OTHER

  • Nova Southeastern University

    lead OTHER

Principal Investigators

  • Ava K Bittner, OD, PhD · Nova Southeastern University; College of Optometry

Eligibility

Min Age
20 Years
Max Age
89 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2014-06-30
Primary Completion
2016-11-30
Completion
2016-11-30

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02177669 on ClinicalTrials.gov