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CRT – Corneal Refractive Therapy

Bristol Family Eyecare Offers CRT!

CRT in Austin TXAre you tired of wearing glasses or contact lenses all day? Looking for a non-surgical alternative to LASIK?

CRT, which stands for Corneal Refractive Therapy works by gently reshaping the cornea to improve your vision… And it all happens while you sleep.

Dr. Bristol is a CRT-certified practitioner in Texas.

CRT temporarily corrects myopia and astigmatism overnight. Literally.

Corneal reshaping using contact lenses is not a new concept. If you have heard of Ortho-K, the idea behind Paragon CRT® is based on a similar mechanism. You put the lenses in at night before bed. When you wake up in the morning, you remove the lenses, and your eyesight is great! (Full results are achieved only after about two weeks of nightly wear.) You can see clearly without glasses or contact lenses.

CRT differs from Ortho-K

Unlike Ortho-K, CRT does not require multiple sets of lenses as your vision improves.

With Paragon Vision Sciences’ advanced technology in oxygen permeable contact lens materials, computerized corneal mapping, and computer-assisted manufacturing processes, Corneal Refractive Therapy (CRT) is available as a single lens, and takes less than two weeks to achieve the desired effect: great vision.

Who can benefit from CRT?

Dr. , an eye doctor who provides CRT near Austin, TX in Bee Cave says: the most successful CRT users are patients with mild to moderate myopia. CRT lenses work for people with astigmatism too. Even children can use Corneal Refractive Therapy contact lenses.

Is it SAFE?

CRT lens material allows the eye to breathe, and most users experience no discomfort or negative side effects. The FDA has approved Paragon CRT® for people of all ages.

Is it permanent?

Unlike laser eye surgery, Paragon CRT® is not permanent. If you stop wearing the CRT lenses on a regular basis, your original eyesight will return.

More Info

For more information about CRT, see

Talk to the eye doctors at Bristol Family Eyecare about whether you are a good candidate for Corneal Refractive Therapy.


With a heavy heart, we are informing you that we have decided to close our office for all care other then for urgent/emergency visits until further notice. This closure is in alignment with the CDC and AOA recommendations for Optometry during the COVID-19 outbreak.

We will continue to monitor our phones and email: and will respond to you in a timely manner. Dr. Bristol will be available for virtual visits through the app Eyecarelive as well as by appointment for in-office care for emergency needs.

Staff will be available for product pickup from 9am-1pm for the remainder of this week. Call us when you arrive at the office and we will take your items to the foyer for you to pick up. Unfortunately, we will not be able to do any adjustments to glasses at this time. After Friday 3/27 we will continue to be available for pickup by appointment only.

We understand that you may have missed your yearly appointment and have a need for contact lenses. We are extending contact lens prescriptions for all current patients for an additional 6 months. Just call us at 512-263-3937 and we can get your order placed and shipped directly to your home for free!

If you need glasses at this time, we can remake a pair of glasses from your previous order.

Please understand that we are constantly monitoring this situation and will open our doors to resume business as soon as we are allowed. The health and safety of our patients and our team are of the upmost importance to us.


Bristol Family Eyecare