Care and cleaning of your Contact Lenses

While daily disposable lenses entail no cleaning, other types call for regular cleaning and disinfecting in order to preserve clear vision and prevent soreness and infections by a variety of microorganisms including bacteria, fungi, and Acanthamoeba, that form a bio-film on the lens surface. There are numerous products that can be used to execute these tasks: 

Multi-purpose solution, The most accepted cleaning solution for contact lenses. Used for rinsing, disinfecting, cleaning and storing the lenses. Using this product eliminates the call for for protein removal enzyme tablets in most cases. Multipurpose solutions are not useful at disinfecting Acanthamoeba from the lens.  In May 2007, one brand of multipurpose solution was recalled due to a bunch of Acanthamoeba infections.  Any multi-purpose solution is, by definition, a compromise, and not as successful for any of its purposes as a single-purpose solution.
Saline solution is used for rinsing the lens after cleaning and preparing it for placement. Saline solutions will not sterilize the lenses.
Daily cleaner, emplored to clean lenses on a daily basis. A few drops of cleaner are applied to the lens as it rests in the palm of the hand, next the lens is rubbed for about twenty seconds with a fingertip on each side. Long fingernails can harm the lens, so care must be exercised.
Hydrogen peroxide solution, employed for disinfecting the lenses, and obtainable as 2-step' or 1-step' systems. If using a 2-step' product, you must make certain that the lens taken out of the hydrogen peroxide is neutralized prior to being worn, or else wear will be tremendously excruciating. Saline must not be utilized to wash away the peroxide. Various peroxide solutions, for example CIBA Vision's Clear Care, come with a unique storage container that contains a catalyzing disk. If soaked in the solution with the disk for no less than 6 hours, the hydrogen peroxide decomposes and the residual solution is a saline that will not harm the eye. People with particularly sensitive, irritable eyes often use this type of cleaning solution. Peroxide solutions are the only universally used sterilizer successful against Acanthamoeba, even though the two-step solutions are more efficient than the one-step, which neutralize too rapidly to eradicate the amoeba's cysts. If you get this solution in your eyes, it is highly suggested that you go to the Emergency Room and get your eye(s) irrigated.
Enzymatic cleaner, used for cleaning protein deposits from lenses, generally weekly, if the daily cleaner is not adequate. Normally, this cleaner is in tablet form. Protein deposits make the wearing of contact lenses uncomfortable, and may lead to a variety of eye problems.
A number of products have got to only be used with certain types of contact lenses: it is imperative to check the product label to make certain that it can be used for a given kind of lens. It is also vital to follow the product's instructions cautiously to decrease risk of eye infection or eye irritation. Additionally, you should always remember to clean the contact cases and lens covers meticulously with water and multi-purpose solution or hydrogen peroxide to circumvent formation of biofilms on its surfaces.

It is essential to make certain that the product does not grow to be contaminated by microorganisms: the tips of the containers for these solutions should never contact any surface, and the container ought to be kept closed when not in use. To neutralize minor contamination of the product and kill microorganisms on the contact lens, some products may have preservatives such as thimerosal, benzalkonium chloride, benzyl alcohol, and other compounds. In 1989, thimerosal was accountable for about 10% of problems linked to contact lenses: because of this, a lot of products no longer include thimerosal. Preservative-free products typically have shorter shelf life. For example, non-aerosol preservative-free saline solutions can characteristically be used for no more than two weeks once opened. The beginning of silicone-hydrogel soft contact lens materials in 1999 made selection of the appropriate disinfecting solution more significant. One study has noted quite a few incompatibilities between these latest lens materials and several solutions resulting in corneal staining.