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  1. 2023年2月15日 · Daily health news from WebMD's team of award-winning journalists. WebMD is the destination for trustworthy and timely medical and health news and information.

  2. 2022年6月14日 · Look 20 feet away for 20 seconds. Get up at least every 2 hours and take a 15-minute break. 6. Visit Your Eye Doctor Regularly. Everyone needs a regular eye exam, even young children. It helps ...