CRT (Corneal Reshaping) Lens Therapy

10 Things to Know About CRT (Corneal Reshaping) Lens Treatment

Not having to depend on glasses or contact lenses during the day is a reality for many people with low to moderate myopia thanks to Corneal Reshaping Treatment. If you are considering trying it out as an option, here are the ten most important things to know about CRT.

What is CRT?

Corneal Reshaping Lens Treatment is a non-surgical treatment. It uses custom designed rigid gas permeable contact lenses to temporarily reshape your cornea during the night so that you can see during the day without needing glasses or contact lenses. You wear the special contact lenses while you are sleeping and remove them when you wake up.

Is CRT same as Orthokeratology?

While it is similar to Ortho-K, CRT uses a more specialized design that provides significant improvements due the lens’ materials, fitting technology, and decades of research.

Who can wear CRT lenses?

CRT lenses are available to anyone with low to moderate myopia, as well as those with mild astigmatism. The procedure was approved by the FDA with no lower age limit meaning it is also available and safe for children who are able to sleep through the night.

Who should avoid CRT lenses?

There are several conditions that can prevent the use of the treatment, including allergic reactions, eye disease, injury, or any other abnormality that affects the cornea or the surrounding tissue. These include eye inflammation or infection, and red, irritated, or severely dry eyes.

Is CRT safe?

Corneal Reshaping Lens Treatment is a completely safe procedure that was approved by the FDA in 2002. Also, it is painless and can be discontinued at any point should any issues arise. However, proper care must be maintained as with all contact lenses, to ensure your eyes remain healthy.

How long does CRT last?

CRT is an ongoing treatment that you reapply every night when you go to sleep by using the retainer lenses. A night of sleep with the lenses should result in a day or two of being able to see without the need for glasses or contact lenses. Continuous nightly use will ensure best daily results.

How long does it take to see improvement from CRT lens treatment?

People with milder cases of nearsightedness can achieve good vision within a few days of trying the treatment. However, for people with higher prescriptions, it can take two weeks or longer before they see any significant results. What to do in the meantime? If it takes several weeks to achieve excellent vision, your old prescription glasses or lenses will no longer work for you. Instead, you will need a series of temporary replacements to see properly during the transition period. In most cases, three pairs of lenses or glasses will be sufficient to get you through this time. Is the corrective effect permanent? Your vision will stay improved for as long as you continue wearing the custom designed lenses each night. If you decided to stop wearing them your vision will return to its pre-treatment level within about three days. How often should the CRT lenses be replaced? In the majority of cases, CRT lenses need to be replaced annually. However, factors such as improper cleaning and everyday care can shorten their life. If you decide CRT is a good option for you, call us at Bettner Vision. Our experienced team will determine if you are a good candidate for the treatment and provide you with best possible care throughout the process.

No image settings found. Please configure it

We look forward to hearing from you.


Find us on the map

Hours of Operation

Our Regular Schedule

Bettner Vision


8:00 am-5:00 pm


8:00 am-6:00 pm


8:00 am-5:00 pm


8:00 am-6:00 pm


8:00 am-5:00 pm