Simulation of the loss of vision caused by cataract,showing a virtually unrecognizable view of activity in Regent's Street,London. Cataract is a general term for the abnormal changes in the lens that result in it becoming opaque,with loss of sight to a varying degree. A mature cataract in an elderly person might appear as a white,cloudy mass over the iris. Cataracts are most commonly a problem of old age,although some may be complications of diseases such as diabetes,Wilson's disease & severe eczema. Steroid drugs & exposure to radiation can also cause cataract formation | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Argentum |
Bildgröße: | 4912 px × 3215 px |
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