Annual lenses are durable lenses with a usability time-frame of 365
days. This type of lens is almost exclusively reserved for coloured lenses.
Though they last a full year, they require a lot of care and attention. Clean
and store the lenses using a high-quality multi-purpose contact lens solution
(don't use peroxide!). Every 5 days, repeat the regular cleaning process and
store these lenses in a fresh solution. And don’t forget to replace the lens
case in which you’re keeping these lenses every three months. If these lenses
are not given proper care, there is no guarantee they will remain comfortable or
healthy.
Quarterly lenses are durable
lenses with a usability time-frame of 90 days. This type of lens is something
you'll usually see among coloured lenses. They are very cost-effective but
require a higher degree of maintenance and care. If they fall within the
category of coloured lenses, it's commonly assumed you won't be wearing them
every day during their 90-day lifespan and that'll you'll carefully clean,
disinfect, and store them. If they fall under the category of normal contact lenses, they should be
specifically prescribed by an eye care specialist. With lenses that need extra
care -e.g. quarterly lenses - be sure to always follow the instructions of your
eye care specialist.
