Development and Validation of a Novel Stereoacuity Test Using Head-mounted Display

NCT03234504 | Unknown

• 1 other identifier: 4-2017-0507
• Study Type: observational
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

This prospective study investigated the validity and test-retest reliability of stereopsis test using head-mount display (HMD). Contour-based circles (crossed disparity: 1,960 to 195 arc of seconds(arc secs)) were generated as separate images on a high resolution phone display (Galaxy S7; Samsung, Suwon, Korea) using a HMD (Galaxy Gear VR; Samsung, Suwon, Korea). Two images were independently projected to each eye as graded circles with random dot background. While the position of the stimulus changed from among 3 possible locations, the subjects were instructed to select the circle with disparity by pressing the corresponding position on a keypad. The results of the new HMD stereotest were compared to those from standard Randot and TNO stereotests.

Conditions

Normal Healthy Volunteers

Outcome Measures

Primary Outcomes (1)

• Correlation between stereopsis with head mount display and stereopsis with Randot or TNO test

  Stereopsis results was expressed as arc sec. The association between log arc sec in stereopsis with HMD display and Randot or TNO test were evaluated. Using Bland Altman plot, the mean differences between two stereopsis results were compared.

  one visit

Secondary Outcomes (1)

• Test-retest variability of stereopsis using head mount display

  one visit

Study Arms (1)

Normal healthy volunteers

Eligibility Criteria

• Age: 19 Years - 60 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

normal healthy volunteers

You may qualify if:

• \. The subjects who want or need to visual acuity test or to test for a prescription for glasses visited the hospital. 2. The Subjects' ages ranged from 19 to 60 years in the study.

You may not qualify if:

• Ocular alignment was assessed with cover-uncover and alternate prism cover testing at distance and near. Significant exodeviation included exophoria was considered to be ≥6 prism diopters were excluded.
• Subjects with a history of ocular surgery within 3 months of the study were excluded.
• Foreigners or subjects who are unable to understand informed consent were excluded.
• Subjects with a history of eye problems, including infection, inflammation, cataract, vitreous opacity or retinal diseases were excluded.
• Subjects with corrected visual acuity of 20/32 in bad eye were excluded.
• Subjects with significant refractive error considered to be ≥2.00 diopters of anisometropia were excluded.
• A female who is pregnant, may be pregnant, or is lactating was excluded.

Sponsors & Collaborators

• Yonsei University: lead

Study Sites (1)

Institute of Vision Research, Department of Ophthalmology

Seoul, 03722, South Korea

RECRUITING

Central Study Contacts

Jinu Han, MD

CONTACT

+82-10-3764-7746; jinuhan@yuhs.ac

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 26, 2017
• First Posted: July 31, 2017
• Study Start: July 24, 2017
• Primary Completion: July 1, 2018
• Study Completion: July 1, 2018
• Last Updated: June 20, 2018

Record last verified: 2018-06

Data Sharing

• IPD Sharing: Will not share

Locations

KR (1)