Article: Wearing Gas Permeable Lenses
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Wearing Gas Permeable Lenses
Most people using contact lenses for correcting their vision look to soft contact lenses as the means for better eyesight. However, rigid gas permeable lenses are still being used and are a viable alternative for those people seeking better vision than what they get with soft contacts.
Rigid gas permeable lenses (RGPs) are much more technologically advanced than the old hard contacts lenses. Hard contacts are made of a material called polymethylmethacrylate or PMMA. The health of the eyes came into question with these types of hard lenses. These contacts let very little oxygen into the eye which caused great discomfort over time. I should know because I wore them for years.
In the early part of the 1980s a new contact was introduced to help oxygen pass through...
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