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

NCT04642495 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 246

Last updated 2021-05-10

No results posted yet for this study

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.

Conditions

  • Visual Acuity

Interventions

DIAGNOSTIC_TEST

Visual acuity testing with SW , Landolt-"C" and Tumbling-"E" symbols

Establish prediction intervals for acuity tests

Sponsors & Collaborators

  • University of Basel

    lead OTHER

Principal Investigators

  • Anja M Palmowski-Wolfe, Prof · University Basel, University Eye Hospital Basel

Eligibility

Min Age
4 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-10-01
Primary Completion
2020-07-30
Completion
2020-09-30

Countries

  • Switzerland

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04642495 on ClinicalTrials.gov