Gas permeable
(GP) Lenses

  • Durable, oxygen-permeable material for all-day comfort and eye health
  • Breathable materials that support long-term corneal health
  • Precise fit tailored to the unique shape of your eyes
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What are GP Lenses?

Gas Permeable (GP) lenses, also known as Rigid Gas Permeable (RGP) lenses, are durable contact lenses made from advanced materials that allow oxygen to reach the surface of the eye. Unlike soft contact lenses, GP lenses retain their shape while worn, providing crisp, stable vision and exceptional optical quality. They are often recommended for patients with keratoconus, high astigmatism, irregular corneas, and other complex vision conditions, or for those seeking sharper vision than soft lenses can provide.


At the Contact Lens Institute of Kansas, Dr. Letourneau specializes in custom GP lens fittings for patients with complex corneal conditions and challenging prescriptions. Each lens is carefully designed to optimize vision, comfort, and eye health based on the unique shape of your eyes.

How GP Lenses Compare to Soft Contact Lenses
Sharper Vision
GP lenses create a smooth refractive surface that can provide clearer, more consistent vision than soft contact lenses.
Built to Last
GP lenses are highly durable and resistant to tearing. With proper care, they can often last a year or longer.
Healthier Eyes
GP lenses allow more oxygen to reach the eye than many traditional contact lens options.
Long-Term Value
Their durability often results in lower longterm costs compared to frequently replacing disposable soft lenses.
What Makes GP Lenses Different?
Smooth Optical Surface

The rigid lens surface helps reduce visual distortions and support clearer, more consistent vision.

Breathable Materials

Made from oxygen-permeable materials, GP lenses allow oxygen to reach the cornea to support eye health and comfort.

Custom Fit
GP lenses are custom-designed for your eyes and move slightly with each blink, helping to promote a healthy tear film and comfortable lens wear.
Frequently Asked Questions

Because GP lenses are custom-made, your fitting appointment is more comprehensive than a standard contact lens exam. We take detailed measurements of your eyes and use advanced technology to design lenses that provide the best possible fit, comfort, and visual outcome.

You may be a good candidate if you’re looking for clearer vision, have been told you have an irregular cornea, or haven’t been fully satisfied with glasses or soft contact lenses. A consultation with Dr. Letourneau can help determine whether GP lenses are the right fit for you.

Most patients adapt to GP lenses within a few days to a few weeks. While they may feel different at first, our team will provide guidance and support throughout the adjustment process to help you wear them comfortably and confidently.
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Any Questions?
Contact Us
Our team will promptly email or call you to answer any questions you may have.
Olathe
Office Hours
  • Monday 7:00am - 6:00pm
  • Tuesday 7:00am - 6:00pm
  • Wednesday 7:00am - 6:00pm
  • Thursday 7:00am - 6:00pm
  • Friday 7:00am - 4:00pm
Topeka Satellite Location
Office Hours
Lawrence
Office Hours
  • Monday 8:00am - 5:30pm
  • Tuesday 9:00am - 6:00pm
  • Wednesday 8:00am - 5:30pm
  • Thursday 8:00am - 5:30pm
  • Friday 7:30am - 5:00pm
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