Gas Permeable Lenses In General
- Date: 2008-08-07 - Word Count: 337
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Modern RGP contact lenses have a lot of advantages over soft contact lenses. They are healthier for your eyes, they don't dry out and they last for years. But people are afraid that RGP lenses aren't comfortable. Lets look at the advantages and disadvantages of RGP lenses and how they can work for your eyes.
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
While RGP contact lenses are healthier, easier to clean and longer lasting, they may not be for everyone. Contact lens wearers that have a hard time with soft contacts and those with astigmatism could be some of the people who benefit from this type of lens.
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
While RGP contact lenses are healthier, easier to clean and longer lasting, they may not be for everyone. Contact lens wearers that have a hard time with soft contacts and those with astigmatism could be some of the people who benefit from this type of lens.
Related Tags: health, contact lens, contacts, vision, eye correction, contact lenses, cheap contact lens, colored contact lens, color contact lens, discount contact lens
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