Ernest Kornmehl, MD, is a LASIK surgery specialist recognized for his expertise in vision correction surgery, including LASIK, PRK, LASEK and CK Surgery. He performs custom wavefront LASIK at his Boston Area offices in Brookline and Wellesley.
Boston Conductive Keratoplasty
(CK Surgery) for Presbyopia
Boston CK Surgery is performed by Dr Ernest Kornmehl, a refractive surgery specialist. Dr Kornmehl has extensive training and experience in the treatment of presbyopia. This webpage provides information about Conductive Keratoplasty Surgery and how it has improved the vision of many of his patients from Boston and around the United States.
Dr. Kornmehl is currently recommending conductive keratoplasty to treat presbyopia. CK for presbyopia works best in people:
- Older than 45 years old
- See well at distance
- Would like to read magazine size print without reading glasses
Frequently Asked Questions
What is presbyopia?
People often confuse farsightedness with this condition, which occurs as the normal result of aging. Presbyopia affects most people by the age of 40 and everyone by the age of 51. This is because the aging process diminishes our natural ability to bring near objects into focus. This condition manifests when the lens inside the eye loses its flexibility, preventing accurate focus on objects in the near field of view, such as reading material.
How is CK performed?
CK uses radio waves, instead of a laser or scalpel, to reshape the cornea and bring near vision back into focus. CK is performed using a small probe, thinner than a strand of human hair, that releases radio waves. The probe is applied in a circular pattern on the outer cornea to shrink small areas of collagen. This circular shrinkage pattern creates a constrictive band (like the tightening of a belt), increasing overall curvature of the cornea. The procedure, which takes less than three minutes, is done in-office with only topical anesthesia (eye drops).
Will you be cutting the cornea?
No. CK is performed without the cutting or removal of tissue. It is a safe, minimally invasive procedure for baby boomers who struggle to read a newspaper, menu, alarm clock, or computer.
Who is a candidate?
Patients who are over 45 years old, and have poor reading vision with very good distance vision.
What will happen to my distance and reading vision in the treated eye?
Following the procedure, reading vision will improve immediately and distance vision when using both eyes will continue to be very good. Distance vision in the treated eye will temporarily decrease to 20/40 to 20/80 and may return to 20/20 or 20/25 after six or more months.
How long does improvement in reading vision last?
From 3 to 5 years. The effect of the treatment is not diminished, but the eye continues to age.
How often can I have the procedure?
Most patients can have two procedures.
Is the procedure painful?
The procedure is virtually painless. During the immediate post-operative period, one may experience some mild discomfort and tearing. A foreign body sensation may be present for 24 hours or more.
What type of anesthesia is used during the CK procedure?
A local anesthetic in the form of eye drops is used to numb the eye. Those patients who are nervous or have a high level of anxiety will be given a mild sedative to help them relax.
How soon can I return to work?
With CK, the majority of patients are able to return to work and other normal activities the day after their procedure. Although recovery is fairly quick, it is advisable to be careful with your eyes and to avoid any strain. Those whose jobs demand intense clarity of vision (such as dentistry, surgery, or computer work) may want to give their eyes some extra rest for several days following the procedure before going back to work.
What are the risks of CK?
Increased astigmatism. This can be corrected with additional treatment. There have been no reported cases of infection or loss of vision.
Are there restrictions after having CK?
As with any vision treatment procedure where the cornea is altered, certain precautions should be taken. After the CK procedure, patients should avoid getting contaminated water in their eyes for at least one week. This includes water from swimming pools, spas, lakes, and the ocean. When showering or taking baths, patients should keep their eyes closed in order to avoid getting soap and dirty water into their eyes. When exercising, sweat should be kept out of the eyes for at least a week after the procedure. Also, patients should avoid rubbing their eyes vigorously for two weeks following the procedure. Females should also avoid applying eye makeup for one week after the procedure.
Is CK reversible?
As with most vision treatment procedures, CK is not reversible. Once the procedure has been performed, it is not possible to "remove" its effects. This is an important factor for anyone thinking about undergoing a vision treatment procedure to carefully consider. To make sure CK is right for you, seek the advice of Dr. Kornmehl.
Can CK be performed on patients who have a pacemaker?
The CK equipment can produce interference that may adversely influence the operation of other electronic equipment. Therefore, CK is contraindicated for patients who are wearing a pacemaker.