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excerpt:"In The Mind's Eye, Sacks, 76, focuses on visual perception - the still-mysterious process by which the retina of the eye drinks in billions of photons each second and sends them to the brain, where they are somehow turned into our view of reality.
Among his many case histories, Sacks includes himself twice - first examining a lifelong inability to recognize faces - and later, his loss of vision in his right eye after a battle with ocular melanoma.
Though it's normally a skin cancer, melanoma can occasionally appear inside the eye. He's been treated with radiation, he said, and while his eye is damaged, his doctors told him that in most cases these cancers don't spread. "I hope it sticks to the agreement," he said.
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Read more: http://www.philly.com/inquirer/local/pa/20101110_Oliver_Sacks_explores_stories_of_visual_perception_lost.html#ixzz14usos5pr
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