Contact lenses should not be soaked in clear water, they should be soaked in a professional care solution, because contact lenses are worn in front of the eye and are in direct contact with the eye, so attention must be paid to the disinfection of contact lenses, otherwise it is easy to cause infection. The contact lens may contain various pathogenic bacteria, such as bacteria, viruses, fungi, and even echinococcosis, so after soaking in water, the pathogenic bacteria may remain on the contact lens, which may cause minor damage to the corneal epithelium when wearing contact lenses, and these pathogenic bacteria may quickly lead to corneal infection, causing keratitis, and also varying degrees of vision loss, even This can lead to eye atrophy and blindness. In addition, soaking with professional care solution can also remove protein residue from contact lenses, which can also reduce the risk of eye allergy or infection.