Comparing a Home Vision Self-Assessment Test to Office-Based Snellen Visual Acuity in Myopic Children

Recruiting

• Conditions: Home Vision; Office-Based Snellen Visual Acuity; Myopic Children
• Interventions: Other: Snellen chart

• Registration Number: NCT06529367
• Lead Sponsor: South Valley University

Brief Summary

This study aims to compare a home vision self-assessment test to office-based Snellen visual acuity in myopic children.

Detailed Description

Visual impairment is an important public health issue worldwide, with a heavy socioeconomic burden. More than 400 million people globally have mild to severe visual impairment.

Visual acuity (VA) screening is the most basic part of ophthalmic examination. Home vision screening tests have become an important way to obtain a measure of an individual's VA without an office-based clinic visit. Knowing a patient's VA can help ophthalmologists remotely triage acute calls, monitor visual recovery after medical or surgical interventions, and ensure visual stability in follow-up telemedicine visits.

Home vision screening tests have become an important way to obtain a measure of an individual's VA without an office-based clinic visit. Numerous electronic home vision assessment tools exist, but many of these are used through applications on mobile or tablet devices.

Study Timeline

• Status Verified: 2024-07
• Study First Submitted: 2024-07-27
• Study First Submitted QC: 2024-07-30
• Study Start: 2024-07-31
• Study First Posted: 2024-07-31
• Last Update Submitted: 2024-07-31
• Last Update Posted: 2024-08-01
• Primary Completion: 2025-02-01
• Study Completion: 2025-02-01

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 80

Inclusion Criteria

• Age ≤ 18 years.
• Both sexes.
• Patients who completed the home visual acuity test and have a subsequent office-based visual acuity test.

Exclusion Criteria

• Last in-office visual acuity of 20/125 or worse in both eyes (to allow for a buffer of at least 2 lines of vision from the upper limit of 20/200 on the home vision assessment).
• Lack of access to MyChart.
• History of keratopathy, cataract, glaucoma, retinal detachment, neuro-ophthalmic disease, or other eye diseases.
• History of ophthalmic surgery or trauma.
• History of systemic diseases.
• Severe psychological or psychiatric diseases.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Visual Acuity Testing group	Snellen chart	Home vision assessment will be conducted using the "Letter Distance Chart" PDF document, a modified Early Treatment of Diabetic Retinopathy Study (ETDRS) chart for testing at 5 or 10 feet, and released for public use. Patients will be asked to use the 5-foot distance for standardization, which allows for visual acuity assessment from 20/16 to 20/200. Patients will be asked to wear their current corrective lens for distance, to take the test at home in a place with good lighting, and to test each eye separately. Office-based vision testing will be performed by a trained ophthalmic technician in a dimmed room with the Snellen chart illuminated on a screen. Patients will be asked to wear their current corrective lens for distance and an eye occluder will be used to test each eye separately.

Primary Outcome Measures

Name	Time	Method
Agreement of visual acuity between office and home	immediately after test performing	Agreement of visual acuity between office and home will be assessed.

Trial Locations

Locations (1)

South Valley University; 🇪🇬 Qinā, Egypt