Important Information You Need To Know If You Plan To Use Soft Contact Lenses
If you are planning to use soft contact lenses will find wearing them is easier and more rewarding than it has been in years past. If you follow proper handling, inserting, and removing techniques, you can avoid many of the problems people run into. Proper care will give you years of enjoyment with your new visual aids.
You need to have some knowledge of the two important parts of the eye--the tear film and the cornea.
The tear film has three layers, composed of a mixture of secretions from various glands of the eye and surrounding area. Each layer has its own function. The tear film keeps the cornea wet, inhibits growth of microorganisms and creates a smooth optical surface. Each time you blink, new tears rewet the eye. Inadequate blinking or a deficient tear film can lead to contact lens troubles.
The cornea is the eye's front surface, upon which the contact lens rests. It's transparent and has to stay that way for good vision. The cornea does a good job when there is a normal tear film, when there is no mechanical irritation caused by dirt or the lens rubbing the eye, when there is no irritation from noxious vapors or the chemicals in eye drops or contact lens solutions, and when sufficient oxygen is reaching the eye.
Since soft contact lenses are made of plastics that can retain water like a sponge, it's imperative to store and rinse them only in approved lens solutions. Distilled water is not sterile; and tap, spring and mineral water not only lack sterility but also contain minerals and other contaminants that build up on the lens, discolor it, and make it unwearable. Therefore, you should use only disinfected or preserved saline solutions.
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