我從來沒有明顯的花眼，從來沒戴過老花鏡。
但最近近距離視力突然變得格外好，穿針一兩秒鍾一次成功，比過去快得多（大概需要十秒左右）。字極小的說明書也可以看得非常清楚。
網上一查嚇一跳，說老年人近距離視力變好常常是白內障前兆。
英文AI：
While cataracts generally cause a gradual decline in vision, it's true that some types of cataracts can temporarily improve near vision, leading to the perception of better eyesight, especially for reading. This "second sight" phenomenon is often associated with nuclear cataracts, which can initially improve focusing on close-up objects. However, this improvement is usually short-lived as the cataract progresses and affects other areas of vision, causing overall blurriness and other symptoms.
