Cataract: Opacity of the eye's crystalline lens. Cataracts causing central visual-field defects are most likely to affect vision.
白内障：表现为眼内水晶体混浊的眼科病。白内障导致的视野缺损多半会损害视力。
Patients may report flashes of light, floaters, a curtain or shadow moving over the field of vision, and peripheral or central visual loss.
患者可能会看到闪光，漂浮物，帷幕或阴影遮挡住了视野，以及周边或中心视力丧失。
And if you think of the things that you do with your central visual field.
大家你们想想自己的视野中心能做的事情。
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