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 type | Interventional |
|---|---|
| Ages | 25 Years to 89 Years |
| Sex | All |
| Enrollment | 20 (estimated) |
| Sponsor | University of Michigan Academic / other |
| Locations | 1 site (Ann Arbor, Michigan) |
| Status | Recruiting |
| Started | October 30, 2017 |
| Main results expected | October 30, 2023 |
| Study ends | October 30, 2023 |
| Registry record updated | December 14, 2022 |
| Trial ID | NCT03635645 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
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University of Michigan
Ann Arbor, Michigan, United States Recruiting
Study contacts
- Principal investigator: James Weiland — University of Michigan
- Study coordinator: James Weiland
- Email: weiland@umich.edu
- Phone: 661-713-4603
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.