My grandmother suffered in her old age from macular degeneration, a common age-related eye disease that causes the center of your visual field (the macula) to gradually fritz out.
我的祖母因她的年龄在旧黄斑变性，一个共同的与年龄有关的眼部疾病，导致中心您的视野黄斑逐步弗里茨了。
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In myopic macular degeneration the occurrence of newly formed vessels in the macula often leads to a fibrotic pigmented scar causing a blind spot in the centre of the visual field.