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Acne and Green Tea
Green tea is used by the Chinese as a traditional medicine to treat many ailments including acne and to improve general well-being. But does it provide an effective herbal alternative to modern medication?
The answer seems to be ‘Yes’. There...
Low Back pain - Ayurvedic Management
Low back pain is one of the most common pain disorders today .It is a chronic condition characterized by a persistent dull or sharp pain per the lower back. It may be also associated with burning, stiffness, numbness or tingling with the pain...
Low Carb Diet Secrets Revealed!
You may be considering a low carb diet program, but wonder if they really work, and if so, how well? Let's take the mystery out of low carb diets by giving you the 3 most important elements to their success. First, you need to bring your...
Magnetic Therapy, The Facts (and Some Myths)
Is magnet therapy regarded yet as a mainstream therapy? I consider it is not and through this series of articles I hope to raise awareness by examining a number of issues that have stood in the way of mass acceptance. There is a useful parallel...
Should I Have a Face Lift
Good question! A face lift is major surgery and surgery means blood, mess, discomfort, stitches and time out to recover. A face lift is expensive too.
There are risks to consider, one is hematoma when the blood collects under the skin and...
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Rigid Gas Permeables Comparisons - Which is best for you?
The purpose of rigid gas permeables comparisons is really to find out which type of contact lens is really the best for you. Before entering into this discussion, perhaps we should be clear as to what a rigid gas permeable (RGP) lens is?
What Are RGP Lenses?
Gas permeable lenses utilise silicon, and were introduced in the mid-1980s. The technology is newer than that used in the creation of soft contact lenses. The use of silicone also makes the plastic more flexible plastic than PMMA, which is the material from which hard contact lenses were originally made.The gas permeable nature of RGP lenses means that oxygen can pass through then, resulting in greater comfort and better eye health. In fact, RGPs transmit more oxygen to the eye than do most soft contact lenses.
GPs can also provide better visual acuity, durability, and deposit resistance than soft contact lenses. They can be easier to clean, and since they're long-lasting, they can be less expensive in the long term than soft lenses.
Comparisons
Tests have been carried out on RGP's, to discover the effects of lenses on corneal swelling and corneal infections.
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Despite 125 Dk/t units or greater, studies have shown differences in overnight swelling between RGP and silicone hydrogel materials. There is a small but significant overnight swelling with RGP lenses in this class when compared with silicone hydrogels, yet studies of Pseudomonas adherence to human epithelium have shown that RGP-wearing corneas bind the least bacteria.
Conclusions. Corneal refractive therapies are on the verge of international acceptance as a standard alternative for treating refraction. Continually using newer, more permeable lens materials is a necessity to ensure safety, efficacy, and, in turn, long-term acceptance.
The research and results above (C) 2004 Lippincott Williams & Wilkins, Inc.
One can conclude from this research that the gas permeable nature of the lens is critical to the well being of the eye. The question of comfort will always play a part in a discussion such as this, but bearing in mind the nature of the conclusions drawn above, it would be worthwhile to make a great effort to try and get used to your RGP's.
Charlie Cory runs a site dedicated to special effects contact lenses at
http://www.fx-eyes.com
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