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Human eye. (a) The structures of the eye and (b) the retinal layers in detail. (c) The function of photoreceptors lost because of hereditary degeneration can be partially replaced by a subretinal chip. The chip carries a microphotodiode array with amplifiers and electrodes on a 3 mm × 3 mm area and is surgically placed subretinally in the location corresponding to the layer of degenerated photoreceptors. Reprinted with permission from ref (75). Copyright 2013 The Royal Society.
