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Comparative Efficacy of Saccadic and Biofeedback Training in Homonymous Hemianopia

NCT06638619 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2026-05-08

No results posted yet for this study

Summary

This pilot study aims to understand how eye movements change in people with vision loss from stroke after completing one of two types of training. The study will look at how eye movements and reading performance change after training. Researchers will compare the results of two groups: one group will complete five clinical training sessions using an eye-tracking machine for 30 minutes each, while the other group will do at-home reading exercises for 20 minutes a day, 5 days a week, for 6 weeks. The goal is to see if there is a difference in performance between the two types of training.

Conditions

  • Hemianopia, Homonymous

Interventions

BEHAVIORAL

Biofeedback Fixation Training

This training type involves the use of microperimetry. Microperimetry is a visual field test that incorporates perimetry and retinal imaging and is a standard ophthalmic clinical technology. It allows for direct observation of the fundus, but uses an eye-tracking system to compensate for involuntary eye movements. A program designed to train patients to direct and hold their gaze at an eccentric location programmed by the controller will be used. When the participant directs their gaze towards the pre-programmed location, a sound of increasing frequency is emitted to let them know they are approaching the correct location. The sound stabilizes into a solid tone when the patient is gazing directly at the trained location (biofeedback) and they are asked to attempt to hold their gaze at this location for as long as possible.

BEHAVIORAL

Saccadic Reading Training

Participants will be assigned to participate in an at-home reading program. The reading exercises consist of worksheets with letter and number combinations of increasing complexity and font sizes. They are intended to increase accuracy in identifying letters and numbers. Worksheets will initially be dispensed with larger font type and spacing and be graded at weekly intervals towards regular, newspaper-size print and spacing over the course of training.

Sponsors & Collaborators

  • University of Alabama at Birmingham

    lead OTHER

Principal Investigators

  • Jason Vice, Ph.D. · University of Alabama at Birmingham

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
89 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-06-30
Primary Completion
2026-11-30
Completion
2026-11-30

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06638619 on ClinicalTrials.gov