Strabismus Measurements Using Automated 3D Video Oculography

Not Applicable

Completed

• Conditions: Strabismus
• Interventions: Device: strabismus video goggles

• Registration Number: NCT02228070
• Lead Sponsor: University of Zurich

Brief Summary

Measuring ocular motility and alignment is important for diagnosing different causes of strabismus, following patients recovering from cranial nerve palsies, preparing patients for strabismus surgery and follow-up post surgery. The current clinical gold standards for measuring ocular alignment are the Hess screen and the Harms tangent screen. These tests are accurate, but require patient cooperation, and are not objective because the patient has to indicate the position of the light he sees on the screen. Our objective is to develop an accurate and easy to use goggles system to measure ocular alignment and motility using 3D video oculography.

Detailed Description

Not available

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study First Submitted: 2014-08-25
• Study First Submitted QC: 2014-08-27
• Study First Posted: 2014-08-28
• Study Start: 2015-07
• Primary Completion: 2016-07
• Study Completion: 2016-07
• Status Verified: 2017-10
• Last Update Submitted: 2017-10-24
• Last Update Posted: 2017-10-26

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 58

Inclusion Criteria

• Patients 11 years or older
• congenital strabismus
• acquired strabismus
• paretic strabismus (oculomotor, abducens and trochlear nerves)
• before and after strabismus surgery
• normal controls

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Exclusion Criteria

• Patients unable to sign informed consent
• Patients with significantly impaired vision
• Patients unable to cooperate with standard strabismus workup (including Hess and Harms tests)
• For sub-study: intolerance to scleral search coils

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
strabismus video goggles	strabismus video goggles	-

Primary Outcome Measures

Name	Time	Method
Validation of video goggles against Hess/Harms screen	initial visit	Measurement of squint angle with 3D video goggles vs. Hess/Harms screen.

Secondary Outcome Measures

Name	Time	Method
Accuracy of video goggles in comparison to scleral search coils	initial visit	Measurement of squint angle with 3D video goggles vs. scleral search coils.

Trial Locations

Locations (1)

Ophthalmology Department, University Hospital Zurich; 🇨🇭 Zurich, Switzerland