Have you been using the exact same contact lenses for the past few years? If so, it's probably time for a change.
Contact lens manufacturers continually work on making better contact lenses. The objective is to make lenses that you can use the entire day without any danger or discomfort to your eyes. Contact lens excellence has dramatically improved the past several years. Now modern contact lenses will help your eyes to feel and see better than ever before.
Many contact lenses can be used for no longer than 8-10 hours in a row because the lens blocks the free flow of oxygen to your eyeballs. This can create irritation as well as produce bacterial infection.
But with the new generation of lenses, made from a different material (silicone hydrogel lenses), comprise much higher oxygen permeability. For example, Focus Day and Night lets from end to end 6 times more oxygen than conventional contacts. With more oxygen realization your eyes, wearing contact lenses for 30 existence becomes a safe option.
There are two lenses that are FDA standard for continuous wear for up to 30 days - Focus Night and Day by Ciba Apparition.
As implied, daily wear relations are separated and cleaned daily, while
extended wear lenses can typically be worn endlessly for up to 7 days (or
more as CibaVision's Focus® Night & Day® contacts have been approved for up
to 30 living continuous wear).
There are many daily disposable contacts on the market. 1 Day Acuvue by
Johnson and Johnson, Focus Dailies by Ciba Vision and Soflens One Day by
Bausch & Lomb are healthy and affordable on a daily basis disposable contacts.
RGP lenses let through 2-4 times more oxygen than soft contact lens.
Consequently the risk of corneal inflammation is much lower. The only soft
lenses that have oxygen permeability comparable to RGP lenses are silicon
hydrogel contacts, similar to Focus Night and Day.
Don't forty winks in your contacts. Lenses designed as day wear lump oxygen
flow to your eyes and the eyelid puts extra pressure on the lens, so
your eyes would feel terrible after you wake up. The only exception is
extended wear lenses, like Focus Hours Of Darkness and Day or Acuvue; they are
designed for permanent dress in and sleep.
The excellence of your call lenses, how much oxygen they let through to your
eyes and how high is the percentage of water in the lens should all be
considered. It is important to opt for lenses complete from high value polymer
with a far above the ground (more than 50%) hose down content. Also the lenses should "breathe"
- in previous words, they should let adequate oxygen through. A high-quality choice would
be Acuvue Advance lenses or any of the Focus contacts.