Reminder-cue Scanning Training for Homonymous Visual Field Loss

Homonymous Hemianopia Clinical Trial

Official title:

Reminder-cue Scanning Training for People With Homonymous Visual Field Loss

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT06136169
• Other study ID #: HST_Pilot
• Secondary ID: R01EY025677
• Status: Not yet recruiting
• Phase: N/A
• Start date: May 2024
• Est. completion date: June 2025

Study information

• Verified date: March 2024
• Source: Massachusetts Eye and Ear Infirmary
• Contact: Alex Bowers, PhD
• Phone: 617 912 2512
• Email: alex_bowers[@]meei.harvard.edu
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study will evaluate a new approach to training people with visual field loss to scan when driving

Description:

Homonymous visual field loss is the loss of vision on the same side in both eyes. The most common types are hemianopia (the loss of one half of the field of vision) and quadrantanopia (the loss of one quarter of the field of vision). Hemianopia and quadrantanopia may cause difficulties in seeing objects on the side of the field loss. People with these types of field loss can compensate by scanning (looking) toward the side of the field loss. However, sometimes they might not scan sufficiently well resulting in delayed responses to hazards when driving. The purpose of this research study is to evaluate a new approach, "reminder-cue scanning training", to training people with homonymous visual field loss to scan when driving.

Participants will receive reminder-cue scanning training in the driving simulator.Typically there will be three training sessions within about a 2-week period. In addition, participants will complete an evaluation in the driving simulator before and after the training.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 30
• Est. completion date: June 2025
• Est. primary completion date: June 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 16 Years and older

Eligibility

Inclusion Criteria:

• Homonymous hemianopia or homonymous quadrantanopia for at least 3 months

• Binocular visual acuity of at least 20/40

• Prior or current driving experience

• Able to attend multiple study visits

• Able to communicate in English sufficiently to understand the study procedures

Exclusion Criteria:

• Hemi-spatial neglect

• Significant cognitive impairment

• Physical or general health problems that could impair the ability to operate the controls of the driving simulator or participate in the training

Related Conditions & MeSH terms

• Hemianopsia
• Homonymous Hemianopia

Intervention

Behavioral:
• Reminder-cue scanning training
Auditory reminders to scan when scanning to the side of the field loss is inadequate

Locations

Country	Name	City	State
United States	Schepens Eye Research Institute	Boston	Massachusetts

Sponsors (2)

Lead Sponsor	Collaborator
Massachusetts Eye and Ear Infirmary	National Eye Institute (NEI)

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in rate of adequate scanning to the side of the field loss	Proportion of intersections at which scanning was adequate to the side of the field loss	Pre-training, post-training (up to 6 weeks)