My sister’s eyes hurt badly today, and after a careful examination at her ophthalmologist, things turned out to be that she wore the contact lenses for too long time a day. The ophthalmologist told her that she can just wore the contact lenses about 7 hours a day, and she’d better buy a pair of frame eyeglasses to wear when she remove the contact lenses. That’ll be good for her eyes, and relief burden from her eyes.