Simulated Walking With Multiplexing Prism for Field Expansion in Monocular Vision

Mass Eye and Ear

Status: Terminated

Conditions: Blind Left Eye; Blind Right Eye; One Eye Blindness

Treatments: Device: Multiplexing Prism

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT06024668

R01EY031777 (U.S. NIH Grant/Contract)

2023P001885

Details and patient eligibility

About

The investigators are developing an assistive device, known as multiplexing prism that expands the field of view for individuals with acquired monocular vision (loss of an eye). The investigators will test the efficacy of the prism in improving the detection of colliding pedestrians during a simulated walking task.

Enrollment: 1 patient

Sex: All

Ages: 16 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• No medical health issues such as seizures, motor movements problem
• Loss of vision in one eye (less than 20/200) for >1 year
• Visual acuity of the seeing eye: Better than 20/32 visual acuity with correction
• No visual field defect in the seeing eye (nasal field of at least >45degree)

Exclusion criteria

• Patients with any physical or mental disabilities, including cognitive dysfunction, balance problems, or other deficits that could impair their ability to respond to the stimuli presented in this study will be excluded
• Any person with a history (such as pacemaker use or photosensitive epilepsy)
• Any person with motor movements problem (e.g., unable to use extremities)

Trial design

Primary purpose: Basic Science

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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1 participants in 1 patient group

Detection of colliding pedestrian

Experimental group

Description:

Participants will perform a simulated walking task in which surrounding pedestrians will walk towards and make a collision. Participants will respond by pressing buttons to indicate the direction of the colliding pedestrians. Participants will perform the task with and without the multiplexing prism in random orders.

Treatment:

Device: Multiplexing Prism