NCT02177669

Test-Retest Variability of Quick Contrast Sensitivity Function Testing

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 100 (actual)
• Sponsor: Nova Southeastern University · Academic / Other
• Sex: All
• Age: 20 Years – 89 Years
• Healthy volunteers: Accepted

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

Type	Name	Description
OTHER	quick Contrast Sensitivity Function test

Timeline

• Start date: 2014-06-01
• Primary completion: 2016-11-01
• Completion: 2016-11-01
• First posted: 2014-06-30
• Last updated: 2017-04-11

Locations

1 site across 1 country: United States