When wearing contact lenses, the care of the lens is a critical step and also determines whether it is healthy and safe to wear. Contact lens care solution is specially used to remove the dust, bacteria and protein deposits on the surface of the contact lens, and soaking the lens can also keep its moisture, making the contact lens softer and improving the wearing comfort. In general, the care solution contains a certain amount of preservatives, but if it is not replaced regularly, after the ingredients lose their activity, they will not be able to function properly. So, how often should contact lens care solution be changed?
Basically, the frequency of replacement of the care solution in the contact lens case is related to the frequency of wearing. If you want to wear contact lenses every day, you must wash and clean the lenses immediately after wearing them, and the care solution in the double box must be replaced simultaneously. However, if you don’t wear it every day, make sure to change the care solution in the case at least every two to three days.
Some wearers will find it very wasteful to replace the care solution, and try to save some. This is actually a big mistake. The care solution that has been soaked in the lens must be completely discarded, because the used care solution has been contaminated. In order to ensure that the lens is clean, the care solution must be completely replaced every time, and it must never be reused. For the entire bottle of care solution, the ingredients in the bottle will gradually lose their activity after opening, which will greatly reduce the sterilization ability, so the effective period is generally three months.
For contact lens care solutions, the most basic functions are disinfection, cleaning, protein removal and moisturization. On the basis of meeting these four basic functions, you should choose a more gentle care solution to avoid eye irritation.