Corneal Reshaping Therapy

CRT lenses are worn overnight and treat nearsightedness while you or your child sleeps. In the morning you remove the lenses for clear vision that lasts all day!


Ortho-K (short for Orthokeratology) is a non-surgical solution for patients with myopia (nearsightedness) that uses specially designed contact lenses (like Paragon CRT® lenses) to improve vision.

When worn overnight, Paragon CRT® contact lenses gently correct the curvature of the cornea, resulting in a corneal shape that focuses light correctly onto the retina. When removed in the morning, distant objects will come back into focus and patients can see clearly without the use of glasses or daytime contacts.

Our goal is to correct your vision by eliminating daytime use of eyeglasses or contact lenses. In the FDA trials for Paragon CRT® contact lenses, more than 90% were able to see 20/40 or better1 (the legal vision requirement for driving without glasses in most states).