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Related Experiment Video

Updated: Dec 6, 2025

Techniques for Processing Eyes Implanted with a Retinal Prosthesis for Localized Histopathological Analysis: Part 2 Epiretinal Implants with Retinal Tacks
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Subretinal Stimulation Chip Set with 3025 Electrodes, Spatial Peaking Filter, Illumination Adaptation and Implant

A Rothermel, H Kaim, S Gambach

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |October 6, 2020
    PubMed
    Summary

    A novel subretinal stimulator chip was developed, achieving high resolution and efficient power use for potential vision restoration. Blind mouse retinas were successfully stimulated in vitro, showing promising results for retinal prosthetics.

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    Area of Science:

    • Biomedical Engineering
    • Neuroscience
    • Ophthalmology

    Background:

    • Retinal implants offer potential vision restoration for blindness.
    • Existing devices face challenges with pixel density, power, and light adaptation.

    Purpose of the Study:

    • To design and test a subretinal stimulator chip with advanced features.
    • To evaluate the chip's performance in stimulating retinal tissue.

    Main Methods:

    • Developed a subretinal stimulator chip with high pixel count and adaptive illumination.
    • Integrated a supporting Application-Specific Integrated Circuit (ASIC) for implantable electronics.
    • Performed in vitro stimulation experiments on blind mouse retinas.

    Main Results:

    • The designed chip integrates high pixel density with high stimulation voltages and low power consumption.
    • Spatial peaking and illumination adaptation features were incorporated.
    • Successful in vitro stimulation of blind mouse retina was achieved.

    Conclusions:

    • The developed subretinal stimulator chip shows potential for effective retinal stimulation.
    • This technology could advance the development of artificial vision systems.
    • Further research is warranted for in vivo and clinical applications.