Gas Permeable Contacts, See Like You've Never Seen Before
What is the benefit of gas permeable contact lenses? I can sum that up in 2 words:
Vision and Health
Alright, maybe that was 3 words, but I am sure you get the point. Gas permeable contact lenses far surpass most any soft contact lens in the arena of vision and health, when used properly.
Optically, a gas permeable lens has a more rigid surface so will provide crisp and clear vision all day long. The gas permeable material does not require moisture to maintain it's shape, therefor even when your eyes get dry, vision will still remain crisp. Whereas soft contact lenses are more prone to flexure and dehydration that can really compromise their optical properties
Regarding health, gas permeable contact lenses can be washed and cleaned off much more efficiantly than soft lenses. And most gas permeable lenses allow almost 8 times as much oxygen to pass directly through the material when compared to most HEMA based soft contact lenses.
The one exception to the oxygen transmisability is silicone hydrogel contact lenses. Silicone based soft lenses such as the Purevision and Night&Day also offer a high rate of breathability for the cornea.
Another nice benefit is that if your gas perm lenses get too dirty or scratched, they can be brought to your eye care professional for a clean and polish. GP lenses usually last a couple years making them, not only the healthiest, but the most affordable as well
Designing and fitting gas permeable contact lenses take a skilled and experienced eye care professional. Each lens is 100% designed to an individual eye, including the amount of oxygen permeability and wetability.
When properly fit, gas perm wearers are some of the happiest contact lens wearers around.
Because an RGP lens is custom made, they can be designed to fit any eye. This includes: irregular astigmatism, keratoconus, post lasik, post RK, and many other corneal scenarios. In short a gas perm can be fit to most any cornea and refraction.In general, the more permeable a material is, the less stable it will be over time. On corneas with high degrees of astigmatism, a lower permeable lens may be used to prevent lens warpage.
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Resources:Use gas permeable contact lenses to achieve the best possible distance vision and use a pair of optical quality reading glasses for the best near vision. Optical quality products make a true difference in your vision. You will see clearly and comfortable.
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