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Artificial human vision.

Jason Dowling¹

¹School of Electrical and Electronic Systems Engineering, Faculty of Built Environment and Engineering, Queensland University of Technology, Brisbane, Australia. j.dowling@qut.edu.au

Expert Review of Medical Devices

|November 19, 2005

Summary

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Artificial vision aims to restore sight using phosphenes, perceived light spots from electrical stimulation. This review covers current artificial vision technologies and development projects for the blind.

Area of Science:

Biomedical Engineering
Neuroscience
Ophthalmology

Background:

Electrical stimulation of the visual cortex produces phosphenes, perceived as light spots.
Artificial vision systems aim to restore sight by leveraging phosphene perception.
Current research explores four main stimulation sites for artificial vision.

Purpose of the Study:

To review artificial human vision technology and requirements.
To discuss current development projects in artificial vision.

Main Methods:

Review of existing literature and development projects.
Analysis of electrical stimulation techniques for visual prostheses.

Main Results:

Phosphene perception can be induced via electrical stimulation.

Related Experiment Videos

Four primary locations for electrical stimulation are under investigation: subretinal, epiretinal, optic nerve, and visual cortex.

Various intra- and surface electrode approaches are used for visual cortex stimulation.

Conclusions:

Artificial vision technology holds promise for restoring sight to the blind.
Continued research and development are crucial for advancing artificial vision systems.
Understanding phosphene perception is key to developing effective visual prostheses.