Conventional lenses sold in vials can be used for up to a year.
These lenses can be worn for a stipulated period during the day and have to be removed at night before sleeping.
These lenses are ideal for those who have a fixed regimen of working and regular sleeping hours.
Different varieties offered by manufacturers have a prescribed maximum limit up to which the lenses can be worn.
It is important to consider this while choosing a pair of contact lenses for yourself.
There are both soft and rigid lenses available in this category and here are some pointers for those who would like to buy these lenses.
If you buy contact lenses for a long duration of use, you must consider a few parameters.
You will have to check if visual clarity is maintained with the contact lenses throughout the period of use.
This means you should have crystal clear vision till the last day of use.
You should also consider the kind of care the lenses need in order to keep you eyes healthy and infection free.
You will have to invest in two basic solutions if you plan to buy yearly disposable lenses.
The first solution would be to soak your lenses in overnight.
This should be done in a contact lens case.
The case is filled with lens care solution that keeps the contacts germ free and prevents the build up of protein and lipid deposits.
The next solution would be a protein removal solution.
You will have to use this solution on a regular basis to get rid of the debris that builds up in you contact lens.
Conventional lenses need more care as compared to the monthly and daily disposables.
Its cost effectiveness is one favorable factor and the rigid one is definitely more cost effective in this category.
All in all, if you are meticulous in your care and approach towards using these lenses, you can have clear, healthy vision for a long time.