Back to search results
NCT06117332

AI-Powered Artificial Vision for Visual Prostheses

Enrolling by Invitation
NAAges 18+InterventionalBasic science
University of California, Santa Barbara
~7 participants
Updated 2025-07-31 on ClinicalTrials.gov
What's tested:Visual prosthesis

At a glance

Recruiting sites
0 of 2 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Phosphene shape
Measured over through study completion, an average of 1 year
+2 more outcomes measured

Conditions

Blindness, Acquired

Explore related trials

Blindness, Acquired

Where it's being run

2 sites across 2 states
California1
Alicante1

Study leadership

  • Michael Beyeler, PhD · PRINCIPAL_INVESTIGATOR · University of California, Santa Barbara

Who to contact

This trial hasn't published a contact. View it on ClinicalTrials.gov

Do you actually qualify for this trial?

Add a private profile and we'll compare every criterion below against your situation — and tell you which ones are met, uncertain, or excluding.

Check eligibility for this trial ~2 min · HIPAA-protected · delete anytime
Eligibility criteria

Inclusion

Subject must be at least 18 years of age;
Subject has been implanted with a visual prosthesis (e.g., Argus II, Orion, Cortivis)
Subject has healed from surgery and the surgeon has cleared the subject for programming;
Subject has the cognitive and communication ability to participate in the study (i.e., follow spoken directions, perform tests, and give feedback);
Subject is willing to conduct psychophysics testing up to 4-6 hours per day of testing on 3-5 consecutive days;
Subject is capable of understanding patient information materials and giving written informed consent;
Subject is able to walk unassisted.
Subject speaks English;
Subject must be at least 18 years of age;
Subject has visual acuity of 20/40 or better (corrected);
Subject has the cognitive and communication ability to participate in the study (i.e., follow spoken directions, perform tests, and give feedback);
Subject is capable of understanding participant information materials and giving written informed consent.
Subject is able to walk unassisted

Exclusion

Visual prosthesis users: Subject is unwilling or unable to travel to testing facility for at least 3 days of testing within a one-week timeframe;
Sighted controls: Subject has a history of motion sickness or flicker vertigo
All: Subject has language or hearing impairment

What this trial measures

  • Phosphene shapethrough study completion, an average of 1 year

    The effect of stimulation strategy on the shape of phosphenes elicited by electrical stimulation. Phosphene shape will be recorded via participant drawings on a touchscreen and quantified using image moments (e.g., area, orientation, eccentricity).

  • Pattern discrimination accuracythrough study completion, an average of 1 year

    The effect of stimulation strategy on the ability to discriminate patterns (accuracy, precision, recall) elicited by electrical stimulation as assessed by verbal responses

  • Scene understanding performancethrough study completion, an average of 1 year

    The effect of stimulation strategy to locate objects of interest (accuracy, precision, recall) and relay accurate descriptions of the visual scene as assessed by verbal responses