The
Department of Energy's Office of Science
is now sponsoring research and development
of an artificial retina, which can
restore sight in blind patients with
macular degeneration, retinitis pigmentosa,
and other eye diseases. The research
is being conducted at the Doheny Eye
Institute, University of Southern
California, in collaboration with
North Carolina State University, University
of California - Santa Cruz, Second
Sight LLC, and six DOE national labs
- Argonne, Brookhaven, Lawrence Livermore,
Los Alamos, Oak Ridge, and Sandia.
The artificial
retina is a device that captures visual
signals and sends them to the brain
in the form of electrical impulses.
The device is a miniature disc that
contains an array of electrodes that
can be implanted in the back of the
eye to replace a damaged retina. Visual
signals are captured by a small video
camera in the eyeglasses of the blind
person and processed through a microcomputer
worn on a belt. The signals are transmitted
to the electrode array in the eye.
The array stimulates optical nerves,
which then carry a signal to the brain.
The technology
that is being developed in the artificial
retina project may be applied not
only to the treatment of blindness
but in the general field of neural
prostheses. It may be adapted to help
persons with spinal cord injuries,
Parkinson's disease, deafness, and
almost any other neurological disorders. |