May 2008
Volume 49, Issue 13
ARVO Annual Meeting Abstract  |   May 2008
The Epiret3 Wireless Intraocular Retina Implant System:Retina Prosthesis Production Techniques
Author Affiliations & Notes
  • M. Niessing
    EpiRet GmbH, Giessen, Germany
  • A. Messner
    Dr. Schmidt Intraocularlinsen GmbH, St. Augustin, Germany
  • P.-W. Coenen
    BYTEC-Medizintechnik GmbH, Stolberg, Germany
  • H. Röthgen
    Dr. Schmidt Intraocularlinsen GmbH, St. Augustin, Germany
  • D. Hoehl
    Thomas RECORDUNG, TREC Giessen, Germany
  • U. Thomas
    EpiRet GmbH, Giessen, Germany
    Thomas RECORDUNG, TREC Giessen, Germany
  • EPIRET 3 group
    EpiRet GmbH, Giessen, Germany
  • Footnotes
    Commercial Relationships  M. Niessing, None; A. Messner, None; P. Coenen, None; H. Röthgen, None; D. Hoehl, None; U. Thomas, None.
  • Footnotes
    Support  BMBF
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 1782. doi:
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      M. Niessing, A. Messner, P.-W. Coenen, H. Röthgen, D. Hoehl, U. Thomas, EPIRET 3 group; The Epiret3 Wireless Intraocular Retina Implant System:Retina Prosthesis Production Techniques. Invest. Ophthalmol. Vis. Sci. 2008;49(13):1782.

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose: : development of a retina implant system as a retinal prothesis for RP patients.

Methods: : a special external energy and signal transmission station for the retina implant system was constructed as to transmit energy to the implant (inductive) and signals via telemetry.The implant was encapsulated with silicone in order to achieve the biocompatibility properties which are required for a long-term implant. Due to the excellent biocompatibility the properties of the two-component silicone material which is used for the production of silicone intraocular lenses, the identical silicone quality was selected for the encapsulation of the implant, too.The encapsulation process was developed as a two-step moulding process using disposable polycarbonate moulds. With the first step a partial silicone layer is generated, the complete encapsulation of the implant is achieved with the second step.Next to the development of the stimulation software, TREC adopted their electrodes for the use with the implant. Prior to the application the implant was sterilized by ethylene oxide.

Results: : the system was successfully implanted and tested with several subjects.

Keywords: degenerations/dystrophies • vitreoretinal surgery • retinal degenerations: hereditary 

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