Clinical trial Recruiting at 1 site Interventional Ages 25 to 89

Improving visual ability in patients with retinal prosthesis

Official title: Experimental and Clinical Studies of Retinal Stimulation

Run by University of Michigan · NCT03635645 · Data updated 2026-11-12

This study is testing new ways to improve vision for people with retinal prostheses by using special stimulation methods and training to help them see shapes better.

Quick facts

Study typeInterventional
Ages25 Years to 89 Years
SexAll
Enrollment20 (estimated)
SponsorUniversity of Michigan
Academic / other
Locations1 site (Ann Arbor, Michigan)
StatusRecruiting
StartedOctober 30, 2017
Main results expectedOctober 30, 2023
Study endsOctober 30, 2023
Registry record updatedDecember 14, 2022
Trial IDNCT03635645 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals implanted with an Argus II Retinal Prosthesis system who can perceive stimulation from at least five electrodes.

Probably not a fit

Patients who are currently participating in other investigatory drug or device studies or have conditions that impair their ability to understand or communicate informed consent may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates innovative methods of retinal stimulation and training aimed at enhancing the visual capabilities of participants with retinal prostheses. It focuses on testing new visual processing units (VPUs) that utilize asymmetric waveforms and bipolar stimulation to improve shape perception. Participants will undergo auditory-visual training to facilitate better integration of visual information from the prosthesis. The goal is to optimize the functionality of the retinal prosthesis and improve overall visual perception.

Why it matters

Potential benefit: If successful, this study could significantly enhance the visual abilities of patients with retinal prostheses, leading to improved quality of life.

How similar studies have gone: Other studies have shown promise in enhancing visual perception through similar approaches, indicating potential for success in this novel intervention.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Must be implanted with an Argus II Retinal Prosthesis system.
* Have 5 or more electrodes that create a perception with stimulation.
* Must be willing and able to comply with the protocol testing requirements.

Exclusion Criteria:

* Subjects participating in another investigatory drug or device study
* Any disease or condition that prevents understanding or communication of informed consent, study demands, and testing protocols.

Where it's running

  • University of Michigan
    Ann Arbor, Michigan, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.