Blindness is obviously a very dangerous condition which puts the patient's life in immense darkness. Any abnormality in the structure of the eye can lead to blindness. For example, Any abnormality in the following structures can lead to blindness. Cornea Pupil Aqueous Humor Vitreous Humor Lens Intraocular pressure Retina Optic nerve. Therefore, the localization of abnormality is necessary for proper treatment. The identification of the false structure and appropriate treatment is the goal of the therapy. A man who's been blind for ten years and had given up hope of ever seeing again has received the gift of sight this Christmas. A new artificial cornea has allowed him to see. Norman Simpson badly damaged the front of his one good eye in an accident. Corneal transplants from donor's eyes failed and doctors said there was nothing more they could do. But the artificial cornea - the window at the front of the eye - has improved his vision so much he can read
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