Guide to Contact Lenses

Gas Permeable (GP) Contact Lenses

Also named as GP lenses, rigid gas permeable lenses, RGP lenses and oxygen permeable lenses, gas permeable contact lenses are a type of rigid lenses which are made of oxygen-transmitting durable plastic. Most people may have heard and worn the old-fashioned hard contact lenses which are made of PMMA. Totally different from the outdated hard [...]

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