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Related Experiment Video

Updated: Jun 6, 2026

Techniques for Processing Eyes Implanted with a Retinal Prosthesis for Localized Histopathological Analysis: Part 2 Epiretinal Implants with Retinal Tacks
10:00

Techniques for Processing Eyes Implanted with a Retinal Prosthesis for Localized Histopathological Analysis: Part 2 Epiretinal Implants with Retinal Tacks

Published on: February 14, 2015

[Subretinal visual implants].

K Stingl1, U Greppmaier, B Wilhelm

  • 1Department für Augenheilkunde, Universitätsklinikum Tübingen, Tübingen. katarina.stingl@med.unituebingen.de

Klinische Monatsblatter Fur Augenheilkunde
|December 16, 2010
PubMed
Summary
This summary is machine-generated.

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The Retina01:32

The Retina

The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.

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This study details a subretinal implant that restores vision for blind patients by replacing degenerated photoreceptors. Current technology offers a limited visual field and resolution, with best results achieving a visual acuity of 21/1000 in retinitis pigmentosa patients.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Neuroscience

Context:

  • Subretinal implants are advanced medical technologies designed to restore partial vision.
  • This specific device replaces the function of degenerated photoreceptors in blind patients.
  • Human trials have been ongoing since 2005, evaluating the efficacy of this visual implant.

Purpose:

  • To provide an overview of the current state of subretinal implant technology for ophthalmologists.
  • To inform healthcare professionals about the capabilities and limitations of the visual implant.
  • To assist ophthalmologists in advising patients interested in this vision restoration technology.

Summary:

  • The subretinal implant features a 70-µm thin microchip with 1500 microphotodiodes, amplifiers, and electrodes.

More Related Videos

Techniques for Processing Eyes Implanted With a Retinal Prosthesis for Localized Histopathological Analysis
12:01

Techniques for Processing Eyes Implanted With a Retinal Prosthesis for Localized Histopathological Analysis

Published on: August 2, 2013

Related Experiment Videos

Last Updated: Jun 6, 2026

Techniques for Processing Eyes Implanted with a Retinal Prosthesis for Localized Histopathological Analysis: Part 2 Epiretinal Implants with Retinal Tacks
10:00

Techniques for Processing Eyes Implanted with a Retinal Prosthesis for Localized Histopathological Analysis: Part 2 Epiretinal Implants with Retinal Tacks

Published on: February 14, 2015

Techniques for Processing Eyes Implanted With a Retinal Prosthesis for Localized Histopathological Analysis
12:01

Techniques for Processing Eyes Implanted With a Retinal Prosthesis for Localized Histopathological Analysis

Published on: August 2, 2013

  • It is implanted under the macula, converting light signals into electrical impulses for the bipolar cells.
  • Successful function requires preserved inner retina function, clear optic media, and good prior visual acuity.

    • Impact:

    • The current technology provides a visual field of 10-12° and a computed resolution of up to 0.25°.
    • The best-achieved visual acuity in blind retinitis pigmentosa patients is 21/1000.
    • This technology offers a potential avenue for vision restoration in patients with specific retinal degenerations.