How long do they last, and do the expiry dates matter?
A. Your practitioner will advise you how long you can use each pair of lenses. With soft lenses this is usually from one day up to a month, depending on lens type. These lifespans are assessed by independent experts and are not an excuse to charge you more money! Some lenses, usually the gas permeable designs, can last much longer, two years is not unusual. In all cases careful lens hygiene is paramount. Expiry dates should be checked before using your lenses and solutions, and of course they matter, otherwise they wouldn’t have them.
