[Technological Set-up of Epiretinal Implants].
1Institut für Werkstoffe der Elektrotechnik I, Rheinisch-Westfälische Technische Hochschule Aachen.
Klinische Monatsblatter Fur Augenheilkunde
|November 18, 2016
Summary
Visual prostheses restore sight in blind patients by electrically stimulating retinal cells. This technology uses an implantable device to process visual information and generate neural signals, leading to visual perception.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Ophthalmology
Background:
- Visual prostheses offer a potential solution for restoring vision in patients with blindness.
- Electrical stimulation of retinal nerve cells is the core principle behind visual prostheses.
Purpose of the Study:
- To explain the fundamental technological principles of retinal prostheses.
- To detail the function of an epiretinal implantable visual prosthesis.
Main Methods:
- Describing the extraocular and intraocular sections of an implantable visual prosthesis.
- Explaining image detection, data encoding, and wireless transmission of information and energy.
- Detailing data decoding and the generation of biphasic electrical pulses for retinal nerve cell stimulation.
Main Results:
- The epiretinal implant processes visual input and transmits encoded data and energy wirelessly.
- Stimulation electrodes generate precisely controlled electrical pulses based on the transmitted visual information.
- Electrical stimulation of ganglion cells generates action potentials transmitted to the visual cortex, resulting in visual perception.
Conclusions:
- Implantable visual prostheses leverage sophisticated technology to translate visual information into neural signals.
- This technology holds promise for restoring a degree of visual perception in individuals with blindness.
