What are rigid gas permeable contact lenses?
Rigid gas permeable (RGP) contact lenses are a type of contact lens made from a rigid, oxygen-permeable material that allows oxygen to pass through to the cornea. They are also sometimes called gas permeable or GP lenses.
Unlike soft contact lenses, which are made from a flexible material that conforms to the shape of the eye, RGP lenses maintain their shape on the eye, creating a tear-filled space between the lens and the cornea. This allows the lens to correct for refractive errors, such as myopia or astigmatism, by altering the way light passes through the eye.
What are the advantages of RGPs?
There are several reasons why someone might prefer rigid gas permeable (RGP) contact lenses:
- Crisper vision: RGP lenses provide excellent visual acuity and sharpness, especially for those with astigmatism or higher order aberrations because RGP lenses hold their shape on the eye.
- Highly effective: They are highly effective in correcting refractive errors such as myopia, hyperopia, and astigmatism.
- Durability: RGP lenses are made of a hard, durable material that resists scratching and tearing, making them less prone to damage than soft contact lenses, and longer-lasting.
- Comfort: Although RGP lenses are initially less comfortable than soft contact lenses, many people eventually find them to be more comfortable because they allow more oxygen to reach the cornea, reducing the risk of eye infections.
- Convenience: RGP lenses do not need to be replaced as often as soft contact lenses.
What are the disadvantages of RGPs?
RGP lenses do have some drawbacks, such as a longer adaptation period. It can take several weeks or months for some people to get used to wearing RGP lenses. They can also be more expensive than soft lenses, and they may be less comfortable to wear, particularly for people who have dry eyes.
Overall, RGP lenses can be an effective option for people who require precise vision correction, but it’s important to consult with an eye care professional to determine if they are the right choice for you.
Contact Coastal Skin and Eye Institute to schedule an eye exam and consultation with one of our board – certified ophthalmologists or optometrists to learn more about your vision and all your options to correct your vision. We have offices in Carmel Mountain and Encinitas, California.