About 4-8 million Vietnamese people suffer dry eyes
Some 4-8 million Vietnamese people are suffering from xerophthalmia – a progressive eye disease caused by vitamin A deficiency that can dry out tear ducts and eyes.
VietnamNet Reporter
Some 4-8 million Vietnamese people are suffering from xerophthalmia – a progressive eye disease caused by vitamin A deficiency that can dry out tear ducts and eyes.
VietnamNet Reporter