0:08 the National Institutes of Health says 20% of cataracts as the clouding of the eye's lens which causes blurry vision are caused by extended UV exposure. and macular degeneration which is the leading cause of blindness in the US can be caused too by too much UV light. 白内障（水晶体が白く濁って視界がぼやけること）の二割と黄斑変性(おうはんへんせい)症は長時間紫外線を浴びることが原因と国立衛生研究所は発表している。
Sunglasses, the protection accessory
練習問題解答
a-5375 have gradually clouded with cataracts 白内障で水晶体がだんだん濁ってきて
a-5432 glaucoma
