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The Effects of Fresnel Prism Glasses on Visual Perception, Balance, Gait and Functional Independence in Post-Stroke Patients

NCT07308054 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 50

Last updated 2025-12-29

No results posted yet for this study

Summary

This randomized controlled trial aims to evaluate the effects of Fresnel prism glasses on visual perception, balance, gait, and functional independence in post-stroke patients. Stroke survivors, particularly those with right hemisphere involvement, often experience visuospatial deficits such as unilateral spatial neglect, leading to impaired balance, abnormal gait, and reduced functional independence. Fresnel prism glasses offer a low-cost, non-invasive intervention that may improve visuospatial alignment and postural control by modifying visual input. Adult post-stroke patients will be randomly allocated into an intervention group receiving Fresnel prism glasses alongside conventional physical therapy, and a control group receiving conventional therapy alone. Outcome measures will include the Motor-Free Visual Perception Test, Berg Balance Scale, Functional Independence Measure, and JAKC Observational Gait Analysis. Assessments will be conducted at baseline, post-intervention, and follow-up. The study is expected to provide evidence on whether Fresnel prism glasses can serve as an effective adjunct to conventional rehabilitation for improving mobility, balance, and functional outcomes in stroke survivors.

Conditions

Interventions

DEVICE

Fresnel Prism Glasse

Fresnel prism glasses consist of lightweight, flexible, press-on plastic prism lenses with a power of 15 prism diopters, affixed to the inner surface of standard spectacle lenses. The prisms are designed to shift the visual field horizontally to promote visuospatial realignment and improve sensory integration during functional activities. Participants assigned to the experimental group will wear Fresnel prism glasses during supervised physiotherapy sessions. The intervention will be administered alongside conventional physiotherapy, including balance training, gait training, postural control exercises, and functional mobility tasks. The prism glasses will be worn throughout the therapy session to facilitate visual feedback and encourage symmetrical weight-bearing and improved postural alignment. The intervention will be delivered for a duration of 4 weeks, with sessions conducted 5 days per week. Each session will last approximately 30-45 minutes and will be supervised by a qualified

BEHAVIORAL

Convetional physical therapy

Conventional physiotherapy will be provided to all participants in both groups according to standard neurorehabilitation protocols. The program will include balance exercises, gait training, strengthening exercises, postural alignment activities, weight-shifting exercises, and task-oriented functional training. Participants in the control group will receive conventional physiotherapy alone, without Fresnel prism glasses, for the same duration and frequency as the experimental group.

Sponsors & Collaborators

  • Lahore University of Biological and Applied Sciences

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
55 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-12-13
Primary Completion
2026-05-26
Completion
2026-05-26

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Diseases

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 NCT07308054 on ClinicalTrials.gov