*Age-related macular degeneration - results in a loss of central vision, which eliminates a person's ability to read or recognize faces
*Retinitis pigmentosa - results in a slow loss of peripheral and then central vision
With the artificial retina device, a miniature camera mounted in eyeglasses captures images and wirelessly sends the information to a microprocessor (worn on a belt) that converts the data to an electronic signal and transmits it to a receiver on the eye. The receiver sends the signals through a tiny, thin cable to the microelectrode array, stimulating it to emit pulses. The artificial retina device thus bypasses defunct photoreceptor cells and transmits electrical signals directly to the retina’s remaining viable cells. The pulses travel to the optic nerve and, ultimately, to the brain, which perceives patterns of light and dark spots corresponding to the electrodes stimulated. Patients learn to interpret these visual patterns. [http://www.artificialretina.energy.gov/howartificialretinaworks.shtml, Artificial Retina Project]<br><br>
[[Image:AR_01.gif|center|500px]]
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