Rigid gas permeable contacts (RGP) is another term for gas permeable contact lens. This type of contact lens is complementary to the soft contact lens. They were first introduced in the late 70s and the manufacturers then incorporate silicone as to the usual polymethyl methacrylate (PMMA). The eyes need a lot of oxygen flow to the cornea, that is why gas permeable contacts is apt than the polycarbon kind. On the other hand silicone is oxygen permeable, which will result to a greater comfort and eye health.
Gas permeable contact lens takes time to adjust to as compared to soft contact lens. The benefits however outweigh the consequences. Whatâ€™s great about a gas permeable contact lens is that it retains its shape when a person blinks. It provides a more vivid vision over soft contact lens. A gas permeable contact lens is tougher than a soft contact lens because it only breaks when someone steps over it while the latter tears easily. Another benefit of gas permeable contact lens is they are made of materials that donâ€™t contain water so proteins and lipids from the tears do not stick to the contact lens. Compared to soft contact lens, the odds of suffering from eye irritations when using a hard lens is lower. Another excellent benefit of using a gas permeable contact lens is that it permits oxygen to go through the cornea. They prevent serious eye complications like inflammation of the cornea.
Most people prefer using gas permeable contact lenses even if they have different problems. Astigmatism, presbyopia, and keratoconus are among those ailments. A person suffering from astigmatism might opt for this because it provides a desirable acuity. Those afflicted with presbyopia on the other hand prefer them for their numerous and multi-focal designs. Because this lenses prevent extreme visual distortion, people with keratoconus opt for them. Gas permeable contacts are also highly recommended for use in extremely dry conditions, since their primary user tend to blink less. Gas permeable contact lenses are also being utilized by people who use the computer often.
However, a gas permeable contact lens needs more effort for maintenance because they last longer than soft contact lens. Keep in mind that, you should consult a physician before deciding to buy contact lenses.