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.
此外，医生还建议在五十岁以后每两年检查一次眼睛，寻找与年龄相关的、能导致老年人失明的视网膜黄斑性病变信号。
After age 50, an exam every two years is recommended to search for, among other things, signs of age-related macular degeneration, a leading cause of blindness in older people.
白内障或眼睛的晶状体浑浊是老年人失明的主要原因。
Cataracts, or a clouding of the lens of the eye, are a leading cause of visual loss among the elderly.
色索性视网膜炎以及与年龄有关的黄斑变性（AMD）是老年最普遍的失明原因，并且与视网膜细胞逐渐的和正常的不可逆损坏有关联。
Retinitis pigmentosa and age-related macular degeneration (AMD) are the most common causes of blindness in old age, and involve the gradual and normally irreversible destruction of retinal cells.
色索性视网膜炎以及与年龄有关的黄斑变性（AMD）是老年最普遍的失明原因，并且与视网膜细胞逐渐的和正常的不可逆损坏有关联。
Retinitis pigmentosa and age-related macular degeneration (AMD) are the most common causes of blindness in old age, and involve the gradual and normally irreversible destruction of retinal cells.
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