The hazards of wearing contact lenses for a long period of time mainly include dry eye, corneal infection, corneal abrasion and so on.
1. Dry eye: contact lenses will cover the cornea, resulting in a decrease in the oxygen permeability of the cornea, which leads to a decrease in the stability of the tear film and triggers dry eye.
2. Corneal infection: long-term contact lens wear will lead to corneal hypoxia, so that the corneal resistance decreases, easily triggered by corneal inflammation, at the same time, if the cleaning is not appropriate, so that the bacteria accumulation, will increase the chance of corneal infection.
3. Corneal abrasion: The concavity of some contact lenses does not match the convexity of the cornea, which may lead to corneal abrasion and even cause corneal perforation and other serious consequences.
Wearing contact lenses requires attention to hygiene and cleanliness, avoiding wearing them for too long, and making sure that there is no uncomfortable state of the eyes when wearing them to prevent eye injuries.