加拿大的科学家发现每天喝一杯啤酒可以降低得白内障——造成老年失明的主要原因——的风险。
Scientists in Canada found one beer a day reduced the risk of cataracts – a major cause of blindness in old age.
在发达国家，白内障很难造成永久性的失明，并且大多数只是老年人才受影响。
In the developed world cataracts hardly ever cause blindness, and mostly elderly people are affected.
Genetech公司研制的药物Lucentis被证明能够有效治疗湿性年龄相关性黄斑变性(亦称老年性黄斑变性)，这种眼病可以导致失明。
A drug called Lucentis, made by Genetech, has proved effective at treating the wet form of age-related macular degeneration, which can lead to blindness.
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