Xiaoyi Sun: What is dry eyes, and what causes dry eyes?

Dry eye syndrome is caused by a chronic lack of sufficient lubrication and moisture on the surface of the eye. Consequences of dry eyes range from subtle but constant eye irritation to significant inflammation and even scarring of the front surface of the eye. What causes dry eyes and how to treat and prevent dry eyes? Listen to ophthalmologist Xiaoyi Sun's talk with Yin Wu.

Xiaoyi Sun Source: Provided by Xiaoyi Sun