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Rods and cones, clearly sighted
Adaptive optics has allowed a clearer view of individual retina cells. Left: the fovea region of the retina, showing the cone cells which are involved in forming sharp central vision. Right: a different area of the retina, in which the large bright dots with a dark ring around them are cones, and the more abundant smaller spots are rods. Credit: Alfredo Dubra, Medical College of Wisconsin
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