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NCT02177669 · ClinicalTrials.gov registry record
Test-Retest Variability of Quick Contrast Sensitivity Function Testing
A clinical trial, sponsored by Nova Southeastern University.
- Completed
- Registry status
- 100
- Enrollment target
NCT02177669: Completed study, sponsored by Nova Southeastern University.
NCT02177669 is a clinical trial that has completed, run by Nova Southeastern University. The registered enrollment target is 100 participants. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT02177669 has completed, sponsored by Nova Southeastern University.
- COMPLETED
- Registry status
- 100 participants
- Enrollment target
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.
Primary Outcome
We will evaluate various contrast sensitivity metrics that are generated by the computer program: (i) AULCSF or area under the curve for the log contrast sensitivity function (CSF), (ii) CSF acuity or the cutoff-frequency at which sensitivity=2.0 is calculated, and (iii) contrast sensitivity at various spatial frequencies (i.e. 1.5, 3, 6, 12, 18.5 cycles per degree), obtained with testing performed binocularly, with the better eye monocularly, and with the better eye using a NoIR 4% transmission
Interventions
- OTHER quick Contrast Sensitivity Function test
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 100 participants |
| Start Date | 2014-06 |
| Est. Completion | 2016-11 |
What the finished NCT02177669 record still lists
NCT02177669 is an observational study that tracks outcomes without assigning an intervention. The registered 100 participants enrollment target is mid-sized for trials with a published cap.
The record links to 0 conditions, and to 1 intervention - of which quick Contrast Sensitivity Function test is the first listed.
NCT02177669 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT02177669 about?
NCT02177669 is a clinical study titled "Test-Retest Variability of Quick Contrast Sensitivity Function Testing". 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...
What is the current status of trial NCT02177669?
This trial is currently completed. The enrollment target is 100 participants. The study started on 2014-06. Estimated completion is 2016-11.
What interventions are being tested in trial NCT02177669?
The interventions under investigation include: quick Contrast Sensitivity Function test (OTHER).
Who is sponsoring clinical trial NCT02177669?
This trial is sponsored by Nova Southeastern University, which has 71 total clinical trials registered on ClinicalTrials.gov.
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