What is CK?
CK is a procedure that’s designed to increase the curvature of the cornea, the clear front part of the eye. It uses radio energy to do this. The radio energy is directed to the cornea’s edge and it has the effect of shrinking the corneal tissue there. This causes the corneal curvature to be more steep. CK is a treatment for farsightedness and presbyopia (hyperopia and middle aged vision respectively). It was approved by the U.S. Food and Drug Administration (FDA) in 2002 for hyperopia. In 2004 the FDA approved it for presbyopia, using monovision (which is a technique called Blended Vision).
How is CK done?
CK is an outpatient procedure. Dr. Khanna will use anesthetic eye drops first, to avoid any discomfort for you. He will use a special instrument called a speculum to keep the eye being treated open, and this will prevent you from blinking during treatment. It does not feel uncomfortable however. Dr. Khanna will mark the treatment area on the cornea, according to the pre-determined treatment plan. To mark the treatment areas, he will use a special dye that will rinse off easily later on.
Dr. Khanna will apply the radiofrequency with a probe, and direct it in very small lines like partial spokes around the edge of the cornea. You will not feel any pain, although some patients report that they can feel a little pressure. Dr. Khanna can treat both the left eye and the right eye in the same appointment.
The recovery period
You will be able to leave our office soon after your CK treatment, as long as there is someone to drive you. Dr. Khanna will give you a prescription for anti-inflammatory and antibiotic eyedrops; he will probably give that to you before the day of your CK treatment, so that you can fill the prescription and have those eyedrops at hand immediately after your procedure. Dr. Khanna may apply bandage contact lenses and ask you to wear them for a few days, to protect your eyes during the healing period.
After the anesthetic wears off, you might have a feeling for a short while as if there is something in your eye. The cornea repairs or replaces cells more quickly than any other part of the body. That means that any feeling that a foreign body is in the eye will last no more than a few days.
Dr. Khanna will recommend that you wear sunglasses for a period of time if you find that you have any increased sensitivity to bright light. Also, for a few days, you might find that you are somewhat nearsighted. However, any sensitivity or nearsightedness will clear up quickly, at which time you will notice much clearer vision.
What is monovision?
Monovision is the treatment of one eye for better near or far vision, leaving the other eye untreated. If you are nearsighted, one eye can be given better far vision, and if you are farsighted or presbyopic, one eye can be given better near vision. The brain will adapt to this change and will learn to interpret image information coming from the eyes in a new way.
What is Blended Vision?
Blended Vision is a name for NearVision CK. This is a treatment for presbyopia or farsightedness. Blended Vision is a procedure which performs CK on one eye to provide clearer close-up vision, and leaves the other eye untreated. The patient can then use both eyes in a new coordinated way to see well at all distances.
If you would like to know more about which vision correction procedure would be best for your particular eyes, we will be glad to give you a personal consultation. Please call or email us today, and we look forward to meeting with you soon.