RECRUITING

Feasibility Tests for Various Prism Configurations for Visual Field Loss

Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

The investigators will develop and test different configurations of high-power prisms to expand the field of vision of patients with visual field loss to assist them with obstacle detection when walking. The study will involve multiple visits (typically four) to Schepens Eye Research Institute for fitting and testing with the prism glasses. The overall objective is to determine best designs and fitting parameters for implementation in prism devices for future clinical trials.

Official Title

Visual Field Expansion Through Innovative Multi-Periscopic Prism Design

Quick Facts

Study Start:2020-11-06
Study Completion:2024-08
Study Type:Not specified
Phase:Not Applicable
Enrollment:Not specified
Status:RECRUITING

Study ID

NCT04424979

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:7 Years to 80 Years
Sexes Eligible for Study:ALL
Accepts Healthy Volunteers:No
Standard Ages:CHILD, ADULT, OLDER_ADULT
Inclusion CriteriaExclusion Criteria
  1. * Visual field loss, either peripheral field loss or hemianopic field loss
  2. * Visual acuity of at least 20/50 in the better eye
  3. * In sufficiently good health to be able to complete sessions lasting 2-4 hours
  4. * Able to independently walk short distances
  5. * Able to give voluntary, informed consent
  6. * Able to speak English
  1. * Any physical or mental impairments, including cognitive dysfunction, balance problems or other deficits that could impair the ability to walk or use the prism spectacles
  2. * A history of seizures in the last 6 months
  3. * Hemispatial neglect (subjects with hemianopic field loss only)

Contacts and Locations

Study Contact

Sailaja Manda
CONTACT
617 912 2522
sailaja_manda@meei.harvard.edu
Alex Bowers, PhD
CONTACT
617 912 2512
alex_bowers@meei.harvard.edu

Principal Investigator

Eliezer Peli, MSc, OD
PRINCIPAL_INVESTIGATOR
Schepens Eye Research Institute of Massachusetts Eye and Ear

Study Locations (Sites)

Schepens Eye Research Institute
Boston, Massachusetts, 02114
United States

Collaborators and Investigators

Sponsor: Massachusetts Eye and Ear Infirmary

  • Eliezer Peli, MSc, OD, PRINCIPAL_INVESTIGATOR, Schepens Eye Research Institute of Massachusetts Eye and Ear

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2020-11-06
Study Completion Date2024-08

Study Record Updates

Study Start Date2020-11-06
Study Completion Date2024-08

Terms related to this study

Keywords Provided by Researchers

  • Visual field expansion
  • Prisms
  • Hemianopsia
  • Tunnel vision
  • Visual field loss

Additional Relevant MeSH Terms

  • Hemianopia, Homonymous
  • Tunnel Vision
  • Visual Field Defect, Peripheral
  • Visual Field Constriction Bilateral
  • Visual Field Defect Homonymous Bilateral