Wearing contacts for a long time or incorrectly can be harmful to the eyes. The oxygen permeability and breathability of the material used in contacts are very poor, and the method of wearing them is to cover the surface of the cornea, so if worn for a long time, they can lead to local infections or complications such as follicular conjunctivitis, corneal epithelial damage, and inflammation of the cornea, so it is not recommended to wear contacts as glasses. If you only wear them occasionally or for a short period of time, they are fine if they have no significant effect. If you experience conjunctival congestion, eye pain, photophobia, tearing or vision loss after wearing contacts, it is recommended that you stop wearing them and go to the hospital for an early checkup to get the right treatment for your condition. If corneal damage occurs, corneal repair treatment is required. If local infection occurs, anti-infection treatment should be given.