For blind patients, there is nothing to see the light more to make them happy. With the development of medical technology, many blind patients can see the light through organ transplantation or drug treatment. But for those patients with complete loss of retinal function in the eye for different reasons, there is still no good way to see them bright again. Recently, California's Second Sight has developed a bionic eye that is unique in that it can convert visual signals into electrical signals that cross the damaged retina or optic nerve, directly stimulating the visual cortex of the patient's brain, allowing the patient's brain to " Look "to the light signal. It has a nice name called Orion. For blind people, it shines like a gleaming constellation in the night. Image source: The State Press Second Sight is the only bio company with an FDA-approved bionic eye. The bionic eye system called Argus II consists of three parts: a pair of camera-equipped glasses, an image processing system, and an epiretinal prosthesis that is surgically implanted into the patient's eye. The visual signal received by the camera is processed by the image processing system and wirelessly transmitted to the patient's retinal prosthesis. There is a set of electrodes in the retinal prosthesis. According to the input signal, this electrode group will release a weak electrical signal to stimulate the nerve cells in the retina. The electrical signals generated by the nerve cells will pass through the optic nerve to the brain. This bionic eye system can be used to help people who have suffered damage to photoreceptors in the retina due to certain diseases, such as retinitis pigmentosa. Image source: The State Press
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