Test-Retest Variability of Quick Contrast Sensitivity Function Testing
| Status: | Completed |
|---|---|
| Conditions: | Healthy Studies |
| Therapuetic Areas: | Other |
| Healthy: | No |
| Age Range: | 20 - 89 |
| Updated: | 4/12/2017 |
| Start Date: | June 2014 |
| End Date: | November 2016 |
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.
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.
Inclusion Criteria:
- Ages 20-89
- Normal distance visual acuity in each of both eyes (20/20)
- Absence of ocular disease
- Able and willing to complete contrast sensitivity testing
- Provide informed consent
Exclusion Criteria:
- Any ocular disease
- Refractive errors >6D
- Inability to understand study or communicate responses (cognitive impairment)
- Unable to understand, read and speak English fluently
We found this trial at
1
site
Fort Lauderdale, Florida 33328
Principal Investigator: Ava K Bittner, OD, PhD
Phone: 954-262-1470
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