Little to the knowledge of a lot of people, there is another counterpart of regular soft tints available in the market. As they say, gas permeable contact lenses are kind of low- profile because only a handful have been patronizing such. This ocular aid is rigid but it should not be confused with the "hard ones" that rose to fame in the second World War.
Most people today don?t realize that the wearing of contact lenses dates back to just after WWII. Back then contacts were made of a rigid or hard material called PMMA and were refered to as ?hard contact lenses?. These contacts didn?t allow much oxygen to pass through which made them very uncomfortable and actually rather unhealthy for the eye.
Soft contact lenses came out in the 1970s and were a great relief to many hard contact lens wearers. These early lenses were for daily wear only and still did not let a lot of oxygen into the eye. In the 80?s, gas permeable lenses were invented which gave the eye more breathing room.
RGP contacts don't contain any water, so they don't dry out. RGP is ideal for people who work in the dry conditions or outside, in the wind. RGP can also benefit computer users, since people blink less often, when working at the computer, and their eyes can become dry. If you wear soft lenses and your eyes feel dry by the end of the day, consider RGP - they don't suck moisture from your eyes and feel comfortable even at the end of the day.
RGP are very good for correcting high degree of astigmatism and presbyopia. They are also the only lenses for some eye diseases, like keratoconus. RGP lenses are more resistant to protein and lipid deposits. This is especially important for people with high protein secretions
RGP lenses are quite pricey. But when consider that RGP lenses usually last for 2-3 years, the overall cost isn't so high. You would spend much more replacing soft contact lenses every 2 weeks. A concept of a rigid lens being in your eye scares most people, because they don't believe that such a lens can be comfortable. But in fact it is - people who wear RGP contact lenses report that a minute after they put the lens in they feel like there is nothing in their eyes.
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