How long can contact lenses last?

Annual polishing contact lenses can theoretically be used for one year, but according to different wearing conditions, the actual service life may only be 8-9 months.

Contact lenses are divided into daily polishing, seasonal polishing, annual polishing and other types. Daily polishing means that they should be replaced after one day of use, seasonal polishing means that they should be replaced after three months of use, and annual polishing means that they should be replaced after 8-9 months of use.

Contact lenses should be soaked in care solution when not in use, and worn for no more than 8 hours each time, so as not to cause keratitis or shorten their service life.