Cited by 59Neuroscience and Neural EngineeringAnalog and Mixed-Signal Circuit DesignRetinal Development and Disorders

Heating of the eye by a retinal prosthesis: modeling, cadaver and in vivo study

Opie, N. L., Burkitt, A. N., Meffin, H., Grayden, D. B.·2012·IEEE Transactions on Biomedical Engineering

Abstract

In order to develop retinal implants with a large number of electrodes, it is necessary to ensure that they do not cause damage to the neural tissue by the heat that the electrical circuits generate. Knowledge of the amount of power that induces thermal damage will assist in development of power budgets for implants, which has a significant effect upon the design of the prostheses circuitry. In this study, temperatures were measured at multiple locations on the retina while the retina was heated in cadaver and in vivo preparations using a variety of prosthesis implantation sites. A finite element thermal model of the cat eye was also created and validated by the cadaver and in vivo tests, allowing for a much larger spectrum of thermal influences to be evaluated without additional animal experimentation. To ensure that retinal tissue temperatures are not increased by more than 2 °C, a 5 mm × 5 mm, suprachoroidally implanted heating element must not dissipate more than 135 mW (5.4 mW/mm (2)).

Integrity signals

Registry

Crossref · 10.1109/tbme.2011.2171961

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21 of 21 references verified0 citation errors · 0 not checkable

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Authors
Opie, N. L., Burkitt, A. N., Meffin, H., & Grayden, D. B.
Affiliations
The University of Melbourne (AU)
Venue
IEEE Transactions on Biomedical Engineering
Published
2012-02
Volume
59
Issue
2
Pages
339-345
ISSN
  • 0018-9294 (ISSN-L)
  • 1558-2531
OpenAlex
W1997184856
Cited by
59
References
21
Citations by year
2026: 1 · 2025: 2 · 2024: 5 · 2023: 1 · 2022: 7 · 2021: 5 · 2020: 9 · 2019: 5 · 2018: 5 · 2017: 5 · 2016: 2 · 2015: 3 · 2014: 5 · 2013: 1 · 2012: 3
FWCI
1.19
Type
journal article
Language
en
Open access
closed
Locations
  • IEEE Transactions on Biomedical Engineering (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Physical Sciences › Engineering › Biomedical Engineering › Analog and Mixed-Signal Circuit Design
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
Keywords
retinal prosthesis, thermal damage, retinal temperature, power budget, finite element thermal model, cat eye, cadaveric study, in vivo evaluation
MeSH terms
Animals, Cadaver, Cats, Electrodes, Implanted, Hot Temperature, Models, Biological, Prosthesis Design, Retina, Finite Element Analysis, Visual Prosthesis

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