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The Perceptual Experience of Argus II Users

NCT05285618 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 6

Last updated 2025-01-01

Study results available
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Summary

This Basic Experimental Studies Involving Humans (BESH) study investigates phosphene perception and performance factors in blind participants implanted with the Argus II retinal prosthesis system. Using paired-electrode stimulation, we analyze how phosphene shape and number are influenced by neuroanatomical factors, stimulus parameters, and spatial offsets. Additionally, we examine the causes of high current thresholds and limited spatial resolution, which impede pattern vision in Argus II devices. This research aims to provide insights for optimizing stimulation strategies and improving retinal prosthesis design.

Conditions

Interventions

DEVICE

Argus II

Participants used the Argus II retinal prosthesis system in both experiments to perform visual perception tasks.

Sponsors & Collaborators

Principal Investigators

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

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2022-01-11
Primary Completion
2023-08-31
Completion
2023-08-31
FDA Device
Yes

Countries

  • United States

Study Locations

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Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05285618 on ClinicalTrials.gov