Trials / Completed
CompletedNCT04642495
Objective Visual Acuity Measurement Using Suppression of the Optokinetic Nystagmus (OKN).
Clinical Application of Objective Visual Acuity Measurement Using Suppression Method to Inhibit Optokinetic Nystagmus (OKN).
- Status
- Completed
- Phase
- —
- Study type
- Observational
- Enrollment
- 246 (actual)
- Sponsor
- University of Basel · Academic / Other
- Sex
- All
- Age
- 4 Years
- Healthy volunteers
- Accepted
Summary
Suppression of the optokinetic nystagmus when a target is perceived can be applied to assess visual acuity objectively. Our aim is to establish prediction intervals for this optokinetic nystagmus suppression test (Speedwheel Test, SW) so that SW acuity may be used to estimate Snellen acuity (FrACT- C and -E) in the clinic in adults and children unable to cooperate in other acuity testing.
Detailed description
In this prospective single center study subjects aged at least 4 years underwent testing of visual acuity with SW, Landolt-C and Tumbling-E symbols (Freiburg acuity test: FrACT-C, FrACT-E). Prediction intervals are to be established for SW compared to FrACT-C or -E and for FrACT- E compared to FrACT-C.
Conditions
Interventions
| Type | Name | Description |
|---|---|---|
| DIAGNOSTIC_TEST | Visual acuity testing with SW , Landolt-"C" and Tumbling-"E" symbols | Establish prediction intervals for acuity tests |
Timeline
- Start date
- 2019-10-01
- Primary completion
- 2020-07-30
- Completion
- 2020-09-30
- First posted
- 2020-11-24
- Last updated
- 2021-05-10
Locations
1 site across 1 country: Switzerland
Source: ClinicalTrials.gov record NCT04642495. Inclusion in this directory is not an endorsement.