Trial Outcomes & Findings for Reminder-cue Scanning Training for Homonymous Visual Field Loss (NCT NCT06136169)
NCT ID: NCT06136169
Last Updated: 2026-05-12
Results Overview
Percentage of intersections at which an early large head scan was made to the side of the field loss
ACTIVE_NOT_RECRUITING
NA
16 participants
Pre-training, post-training (1 week)
2026-05-12
Participant Flow
Participants were recruited from local ophthalmology outpatient clinics
Participant milestones
| Measure |
Intervention
All participants were allocated to receive three sessions of reminder-cue scanning training in the driving simulator
|
|---|---|
|
Intervention
STARTED
|
16
|
|
Intervention
COMPLETED
|
16
|
|
Intervention
NOT COMPLETED
|
0
|
|
Follow up
STARTED
|
16
|
|
Follow up
COMPLETED
|
16
|
|
Follow up
NOT COMPLETED
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Reminder-cue Scanning Training for Homonymous Visual Field Loss
Baseline characteristics by cohort
| Measure |
Intervention
n=16 Participants
All participants were allocated to receive three sessions of reminder-cue scanning training in the driving simulator
|
|---|---|
|
Age, Continuous
|
52.5 years
n=1512 Participants
|
|
Sex: Female, Male
Female
|
7 Participants
n=1512 Participants
|
|
Sex: Female, Male
Male
|
9 Participants
n=1512 Participants
|
|
Race (NIH/OMB)
American Indian or Alaska Native
|
0 Participants
n=1512 Participants
|
|
Race (NIH/OMB)
Asian
|
1 Participants
n=1512 Participants
|
|
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
|
0 Participants
n=1512 Participants
|
|
Race (NIH/OMB)
Black or African American
|
0 Participants
n=1512 Participants
|
|
Race (NIH/OMB)
White
|
15 Participants
n=1512 Participants
|
|
Race (NIH/OMB)
More than one race
|
0 Participants
n=1512 Participants
|
|
Race (NIH/OMB)
Unknown or Not Reported
|
0 Participants
n=1512 Participants
|
PRIMARY outcome
Timeframe: Pre-training, post-training (1 week)Percentage of intersections at which an early large head scan was made to the side of the field loss
Outcome measures
| Measure |
Intervention
n=52 Intersections
All participants were allocated to receive three sessions of reminder-cue scanning training in the driving simulator
|
|---|---|
|
Rate of Early Large Head Scans to the Side of the Field Loss
Pre-training
|
18 Percentage of intersections
Interval 9.0 to 26.0
|
|
Rate of Early Large Head Scans to the Side of the Field Loss
1-week post-training
|
84 Percentage of intersections
Interval 77.0 to 91.0
|
PRIMARY outcome
Timeframe: Pre-training, Post-training (1 week)Percentage of hazards detected out of the total number of hazards on the side of the field loss
Outcome measures
| Measure |
Intervention
n=10 Hazards
All participants were allocated to receive three sessions of reminder-cue scanning training in the driving simulator
|
|---|---|
|
Detection Rate for Hazards on the Side of the Field Loss
Pre-training
|
56 Percentage of hazards
Interval 41.0 to 70.0
|
|
Detection Rate for Hazards on the Side of the Field Loss
1-week post-training
|
86 Percentage of hazards
Interval 76.0 to 95.0
|
SECONDARY outcome
Timeframe: Pre-training, Post-training (1 week)Number of head scans per intersection to the side of the field loss. A validated algorithm was used to detect head scans, defined as lateral rotations of the head away from the straight ahead position toward either the left or the right, which exceeded a predefined threshold based on the participant's distance to the intersection: ≥ 4° (100 to 50 m to intersection), ≥ 6° (50 to 20m), ≥ 10° (20 to 0m). Savage SW, Zhang L, Swan G, Bowers AR (2020) The effects of age on the contributions of head and eye movements to scanning behavior at intersections. Transp Res Part F Traffic Psychol Behav. 73:128-142. Swan G, Goldstein RB, Savage SW, Zhang L, Ahmadi A, Bowers AR (2021) Automatic processing of gaze movements to quantify gaze scanning behaviors in a driving simulator. Behav Res Methods. 53(2): 487-506
Outcome measures
| Measure |
Intervention
n=52 Intersections
All participants were allocated to receive three sessions of reminder-cue scanning training in the driving simulator
|
|---|---|
|
Number of Head Scans to the Side of the Field Loss
Pre-training
|
2.2 Number of head scans per intersection
Interval 1.8 to 2.7
|
|
Number of Head Scans to the Side of the Field Loss
1-week post-training
|
3.5 Number of head scans per intersection
Interval 3.1 to 4.0
|
SECONDARY outcome
Timeframe: Pre-training, Post-training (1 week)Mean magnitude (in degrees) of head scans to the side of the field loss. A validated algorithm was used to detect head scans, defined as lateral rotations of the head away from the straight ahead position toward either the left or the right, which exceeded a predefined threshold based on the participant's distance to the intersection: ≥ 4° (100 to 50 m to intersection), ≥ 6° (50 to 20m), ≥ 10° (20 to 0m). The magnitude is the lateral angular extent of the scan measured from the straight-ahead position to the furthest lateral position to the left or right. Savage SW, Zhang L, Swan G, Bowers AR (2020) The effects of age on the contributions of head and eye movements to scanning behavior at intersections. Transp Res Part F Traffic Psychol Behav. 73:128-142. Swan G, Goldstein RB, Savage SW, Zhang L, Ahmadi A, Bowers AR (2021) Automatic processing of gaze movements to quantify gaze scanning behaviors in a driving simulator. Behav Res Methods. 53(2): 487-506
Outcome measures
| Measure |
Intervention
n=52 Intersections
All participants were allocated to receive three sessions of reminder-cue scanning training in the driving simulator
|
|---|---|
|
Magnitude of Head Scans to the Side of the Field Loss
Pre-training
|
23.9 Degrees
Interval 20.3 to 27.5
|
|
Magnitude of Head Scans to the Side of the Field Loss
1-week post-training
|
27.5 Degrees
Interval 23.8 to 31.2
|
SECONDARY outcome
Timeframe: Pre-training, Post-training (1 week)Mean time (in seconds) between the hazard appearing and the horn-press response
Outcome measures
| Measure |
Intervention
n=10 Hazards
All participants were allocated to receive three sessions of reminder-cue scanning training in the driving simulator
|
|---|---|
|
Response Times to Hazards on the Side of the Field Loss
Pre-training
|
2.7 Seconds
Interval 2.4 to 3.0
|
|
Response Times to Hazards on the Side of the Field Loss
1-week post-training
|
1.9 Seconds
Interval 1.6 to 2.1
|
Adverse Events
Intervention
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Alex Bowers
Schepens Eye Research Institute of Mass Eye and Ear
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place