Retinal Prostheses: Restoring Vision to the Blind

This is such an amazing advancement!

Knowing Neurons

Vision is arguably one of our most important senses.  We rely on it to recognize color, shape, movement, distance, and perspective about the world around us.   Although all parts of the eye help us perceive our environment, the most vital part is the retina, the thin layer of tissue that lines the back of the eye.  This structure contains several layers of cells interconnected by synapses.  When light enters through the eye, it passes all the way through the retina, until it is captured by photoreceptors.  These cells then convert the light energy into tiny electrochemical impulses, which are processed by retinal neurons, before the signal is sent to the brain.


Loss of vision can have a huge impact on a person’s life.  One particularly devastating disease, retinitis pigmentosa (RP), affects 1 in 400 people in the United States.  Those affected by RP progressively lose their vision…

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