CRT & Ortho-K Contact Lenses
CRT (Corneal Refractive Therapy)—also known as Ortho-K—is a safe, non-surgical vision correction method that uses specially designed overnight contact lenses to temporarily reshape the cornea. By morning, patients can remove the lenses and enjoy clearer vision throughout the day—without glasses or daytime contacts.
At Fagadau, Swanson & Mirza, M.D., our eye doctors in Dallas offer expert fitting and management of CRT/Ortho-K lenses for children, teens, and adults seeking an alternative to glasses, soft contacts, or refractive surgery.
What Are CRT & Ortho-K Contact Lenses?
CRT and Ortho-K refer to the same type of treatment: overnight wear of rigid, gas-permeable contact lenses that gently reshape the cornea while you sleep. This reshaping corrects refractive errors temporarily, allowing for clear vision the next day without wearing lenses.
The effect is reversible and non-surgical, making Ortho-K an attractive option for many patients—including those who are not candidates for LASIK.
How CRT / Ortho-K Works
- You wear the custom Ortho-K lenses overnight while sleeping.
- The lenses gently reshape the cornea’s front surface.
- You remove the lenses in the morning.
- Your vision remains clear throughout the day—without glasses or contacts.
Most patients notice improvement within the first few nights, with optimal results after 1–2 weeks.
Is Ortho-K Safe?
Yes. Ortho-K has been used safely for decades and is FDA-approved for overnight wear when properly fitted and monitored by an eye doctor. Because it’s reversible and non-surgical, it is a popular alternative for patients who prefer non-invasive options.
Our Dallas ophthalmologists and optometrists provide comprehensive follow-up to ensure comfort, safety, and long-term success.
Ortho-K for Myopia Control in Children
Ortho-K is one of the most effective tools available today for slowing the progression of childhood myopia. By reshaping the cornea overnight, these lenses help manage how quickly nearsightedness worsens over time.
This makes CRT lenses a strong option for families in Dallas seeking long-term vision benefits for their children.
Benefits of CRT / Ortho-K
- No daytime contacts or glasses
- Non-surgical and reversible
- Ideal for sports and outdoor activities
- Helps manage childhood myopia progression
- Comfortable for people with dry eye symptoms
- Great for patients in dusty or windy environments
