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Updated: Jun 24, 2026

Techniques for Processing Eyes Implanted With a Retinal Prosthesis for Localized Histopathological Analysis
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[Towards clinical application of a visual prosthesis].

Yasuo Tano1

  • 1Department of Ophthalmology, Osaka University Medical School, Japan. ytano@ophth.med.osaka-u.ac.jp

Nippon Ganka Gakkai Zasshi
|April 8, 2009
PubMed
Summary

Researchers developed an artificial vision system using suprachoroidal transretinal electrical stimulation (STS) for blindness caused by outer retinal disorders. This visual prosthesis offers a spatial resolution comparable to counting fingers, aiding patients with conditions like retinitis pigmentosa.

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Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Neuroscience

Context:

  • Outer retinal disorders, such as retinitis pigmentosa, cause progressive vision loss.
  • Current treatments for these conditions are limited.
  • Developing effective visual prostheses is crucial for restoring sight.

Purpose:

  • To develop and assess a novel visual prosthesis for patients with outer retinal disorders.
  • To evaluate the safety and efficacy of a suprachoroidal transretinal electrical stimulation (STS) system.
  • To explore neuroprotective strategies for retinal degeneration.

Summary:

  • A suprachoroidal transretinal electrical stimulation (STS) system was developed by the Japan Artificial Vision Project.
  • The system's safety, stability in animal models, and spatial resolution (equivalent to counting fingers) were evaluated.

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  • Animal models of retinal degeneration were created, and transcorneal electrical stimulation demonstrated neuroprotective effects.

    • Impact:

    • The developed STS system represents a unique artificial vision solution.
    • This technology has the potential to significantly improve the quality of life for individuals with retinitis pigmentosa and similar conditions.
    • Further development of the STS system is expected to lead to a commercially available visual prosthesis.