ARTIFICIAL EYE

SEMINAR ON ARTIFICIAL EYE : The retina is a thin layer of nerve tissue that lines the back wall of the eye.Some of these cells act to receive light, while others interpret the information and send messages to the brain via the optic nerve. This is part of the process that allows us to see. In damaged or dysfunctional retina, the photoreceptors to stop working, causing blindness. Of According to some estimates, over 10 million people worldwide suffer from diseases of the retina Leading to vision loss. No effective therapeutic remedy for retinitis pigmentosa (RP) and age-related macular degeneration (AMD) has motivated the development of experiences strategies to restore a degree of visual function of patients. Because other retinal layers are anatomically spared, several approaches have been designed to artificially activate the residual retina and therefore, the visual system. Currently, two general strategies were pursued. "The approach epiretinal implies a semiconductor device is placed above the retina, near or in contact with nerve fiber layer of retinal ganglion cells. The information contained in this approach must be captured by a Camera system before transmitting data and power for the implant. The "under the retina" approach associated with electronic stimulation of the inner part of the retina from the retinal area for sowing is an array of semiconductor-based micro-photodiode (MPA) in this place. Concept focus on the retina is that the electrical charge generated by the MPA in response to light stimulus can be used to artificially alter the membrane potential of neurons in the rest retinal layers are composed of a way to produce images. Some researchers have developed a system with camera shoot, a chip processes the images and an array of electrodes transmits images brain. It's called cortical prostheses.