A Novel Strabismus Screening Device Based on Virtual Reality Head-Mounted Displays with Eye Tracking System in Measuring the Angle of Deviation in Constant Concomitant Horizontal Strabismus

Not Applicable

Recruiting

• Conditions: The angle of deviation in constant concomitant horizontal strabismus.; Strabismus; angle; deviation; virtual reality; eye tracking; alternate prism cover test; constant; concomitant; horizontal strabismus

• Registration Number: TCTR20180422001
• Lead Sponsor: THE 90 TH ANNIVERSARY OF CHULALONGKORN UNIVERSITY FUND ( Ratchadaphiseksomphot Endowment Fund)

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2018-04-22
• Study Completion: 2019-06-30
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Recruiting
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

1.Adult aged 18-60 years in muscle clinic, KCMH
2.Constant concomitant horizontal strabismus; defined as horizontal strabismus that angle of deviation does not change in different gaze position, and the deviation can be noticed at all time.
3.Angle of deviation equals to or more than 10 prism diopters
4.Difference of near and distance angle of deviation equals to or less than 10 prism diopters
5.Best corrected visual acuity of both eyes equal to or better than 20/30.

Exclusion Criteria

1.Range of ocular duction less than 80 prism diopters
2.Angle kappa
3.Eccentric fixation
4.Anterior segment eye abnormalities
5.Restrictive or paralytic strabismus
6.Nystagmus
7.Neurological underlying disease
8.Unable to cooperate / noncommunicative patients

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
To determine the agreement of a novel adapted virtual reality head-mounted displays (VR HMDs) with e after end of the intervention immediately Intra-class correlation (ICC) and Bland-Altman plot

Secondary Outcome Measures

Name	Time	Method
To determine repeatability of a novel adapted virtual reality head-mounted displays (VR HMDs) with e after end of the intervention immediately Intra-class correlation (ICC)