Even soft contacts don’t exactly go bad , contact solution can act as a breeding ground for germs over time. If your monthly disposable have been sitting in solution for less than 30 days, you can clean and disinfect them with new solution before putting them in your eyes.
Soft contacts that sit in solution for a long time may eventually dry out as the solution evaporates. Dried-out lenses may be damaged, so don’t try to rehydrate and reuse them. If they’ve been sitting in solution for several months to a year or longer, it’s safest to throw them away and start over with a fresh pair.
If your contacts are sitting in a case, you should change your disinfecting solution at least once every 30 days. That’s an absolute minimum and may need to be more frequent depending on your contacts replacement schedule. You also may change the solution every week or two to be on the safe side.
It’s important to use fresh contact solution every time you disinfect and store your contact lenses. Never reuse or top off contact solution that’s sitting in your contact case. If you store your contacts for an extended period of time, be sure to clean and disinfect them with fresh contact solution before putting them in your eyes. Don't forget to get your fresh new contact lens at shop.malayaoptical.com