Walnut Creek Optometry Group
Orthokeratology (Ortho-K / CRT)
Orthokeratology uses custom rigid gas permeable lenses worn overnight. While you sleep, the lenses gently reshape the cornea. You wake up with clear, comfortable vision and go through the day without glasses or daytime contact lenses. We fit three designs to match each patient's prescription and corneal shape.
What's included
- Paragon CRT (Corneal Refractive Therapy)
- Abiliti overnight lenses (Johnson & Johnson)
- Global-OK designs — global-ok.com
- Corneal topography mapping before fitting
- Pediatric myopia control protocol
- Follow-up at 1 day, 1 week, 1 month, then every 6 months
- Coordination with our full myopia control program
How it works
The tissue of the cornea is gently reshapable. A custom GP lens worn while you sleep flattens the central curve enough to focus light correctly the next day. Some patients see clearly within a single night; for most, it takes one to four weeks of nightly wear to settle. FDA-approved since 2002.
Who should consider Ortho-K
- Allergies or discomfort with daytime contact lenses
- Dry eye that flares with regular contact wear
- Active sports where glasses or daytime lenses are inconvenient
- A general preference to be glasses-free without surgery
- Children whose myopia is progressing — Ortho-K is part of our myopia control program
What to expect
Mild lens awareness the first few nights is normal and fades quickly. You may still need glasses for a few days at the start. Once stabilized, vision stays clear all day — and the process is fully reversible if you stop wearing the lenses. Most reported side effects relate to lens hygiene, so we go over cleaning and storage carefully at the fitting.
Contact Us
Have a question, or ready to schedule?
All appointments are scheduled by phone — please give us a call during office hours.
Call 925-934-4313