Once a futuristic high-tech vision to cure the blind, retinal prosthesis has come to reality and has received Food and Drug Administration approval for patients with advanced retinitis pigmentosa and profound vision loss. It is fascinating to see that patients with visual acuity of bare light perception for many years, now with the help of retinal prosthesis, are able to recognize letters, detect motion and navigate. Those who have interacted with patients implanted with retinal prostheses know that how excited and grateful these patients are for a gain in visual acuity which may seem so trivial to most people. However, as more patients receive retinal prostheses, their expectations will increase, and they will demand a better visual gain from the device.
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