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

South Valley University

Status: Enrolling

Conditions: Home Vision; Office-Based Snellen Visual Acuity; Myopic Children

Treatments: Other: Snellen chart

Study type: Observational

Funder types: Other

Identifiers

NCT06529367

SVU\MED\OPH026/4/24/7/887

Details and patient eligibility

About

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

Full 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.

Enrollment: 80 estimated patients

Sex: All

Ages: Under 18 years old

Volunteers: No Healthy Volunteers

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.

Trial design

80 participants in 1 patient group

Visual Acuity Testing group

Description:

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.

Treatment:

Other: Snellen chart