The cause of dry eye is very complicated, not single and absolute, and it must be examined by an ophthalmologist to determine it. Some users can solve this problem by matching contact lenses and colored contact lenses suitable for their eyes.
There are many reasons for dry eyes, which can be generally divided into two categories: less tears & tears are easy to volatilize, such as the environment-being in a dry air-conditioned environment for a long time (such as an air-conditioned room, especially in summer).
Improper maintenance-the deposits produced by the lens affect the wetting degree of the lens and easily irritate the eyes. Abnormal blinking-staring at nearby objects (such as computer workers) for a long time, forgetting or reducing the number of blinks will lead to dry eyes.