Both soft and hard lenses have deposits and contaminants on them during use, mainly proteins, grease, microorganisms, inorganic substances and dust. On the one hand, they change the fitting characteristics of the lenses, and on the other hand, they cause pathological changes in the eye to varying degrees. Therefore, it is important for patients and their families to pay great attention to the hygiene of wearing lenses and to avoid serious complications by strictly following the rules of care and cleaning of lenses and care tools. 1, the role of rigid corneal contact lens care: to ensure the effect of wearing the lens correction; prevent eye complications; prolong the life of the lens. 2, hard corneal contact lens care system: care solution: disinfectant, wetting solution, surface cleaner, deproteinizer, etc.; care tools: lens case, mirror, tweezers, suction stick, etc. 3, hard corneal contact lens cleaning steps: wash your hands → remove the lens → add care solution rub the lens → cleaning solution rinse → remove protein 1-2 times a week → disinfection solution disinfection → rinse → wear / save 4, hard corneal contact lens cleaning methods: before wearing the lens and after removing the lens need to clean, to carefully clean. First of all, wash your hands and hold the lenses with the thumb, index finger and middle finger of one hand and clean them carefully with the special care solution for lenses; or put the lenses concave side up, flat on the palm of one hand and rub them with the middle finger or ring finger or pinky finger of the other hand; then hold the lenses with the thumb, index finger and middle finger of the right hand and wash them thoroughly with the flowing clean water while washing the care solution; the lenses attached to the When there are more contaminants, you can use a high concentration of care solution to clean and soak the lens. 5. Preservation methods for hard contact lenses: soft and hard lenses must be placed in a special preservation case for the corresponding corneal contact lenses to prevent scratching of the lenses; the case should be filled with care solution, which contains mainly surfactants and antiseptic agents and has the function of cleaning, disinfection and preservation of the lenses; the care solution in the case should be replaced daily, and the care solution in the case should be thoroughly rinsed off and dried after taking out the lenses. The lenses should be soaked for not less than 4 hours each time. If the lenses are not worn for a long time, the care solution in the case should be replaced at least once a week; the case should also be cleaned with water every day for storage, and the case should be replaced every 3-6 months. 6, rigid corneal contact lens care, cleaning and preservation of precautions: wearing, care of the corneal contact lens must be cut short nails, clean hands; rigid corneal contact lens care solution should be dedicated, especially the RGP-CL, OK lenses should be its special care solution; care solution before opening the use of detailed reading instructions, pay attention to the preservation temperature and use period to ensure the safety of use; care solution, especially protein scavenger It is absolutely forbidden to put drops of care solution, especially protein scavenger and care solution with protein removal function, into the eyes to prevent irritation and other adverse reactions to the eyes; the care solution must be poured out and cleaned in the case after lens care; the order of care operation cleaning – rubbing – protein removal – cleaning – soaking in the case must not be reversed to avoid affecting the care effect; the lenses must be taken care of regularly to avoid damage to the lenses when not worn for a long time; the lens box and lens care special tweezers should be regularly disinfected care to avoid causing pollution; hard lenses lenses are fine and fragile so care and cleaning process need to be carefully operated to prevent the lenses from breaking and rupture; hard lenses lenses are small in order to prevent water from washing away the lenses, leak-proof plugs can be placed at the water flow outlet to avoid loss; care products should be carefully selected to avoid allergies and other adverse reactions in use; in addition. Always consult your physician when you do not understand the use or purchase.