By Helen Thomson, New Scientist
A prosthetic device capable of deciphering the code that allows the brain to make sense of visual stimuli has allowed blind mice to see clearly.
A human version could one day give back vision to the millions of people who have lost their sight through retinal degeneration.
In a healthy eye, light enters the retina and activates light-sensitive photoreceptors which process and send information to ganglion cells that in turn transmit the message on to the brain as a pattern of electrical activity.
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