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Objective Visual Acuity Measurement Using Suppression of the Optokinetic Nystagmus (OKN). — Speedwheel  

Visual Acuity Clinical Trial

Official title:
Clinical Application of Objective Visual Acuity Measurement Using Suppression Method to Inhibit Optokinetic Nystagmus (OKN).

Clinical Trial 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.

Clinical Trial 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. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04642495
Study type Observational
Source University of Basel
Contact
Status Completed
Phase
Start date October 1, 2019
Completion date September 30, 2020
View Details
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