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Experience Canterbury Eye Specialists Conductive Keratoplasty (CK) is an exciting new procedure designed to treat farsightedness and presbyopia without using 
a laser.
Painless CK Surgery
"the highest quality of care and attention for one of your greatest assets - your vision"
Download CK Movie
How does CK work?
Near Vision Improved
Dist Vision Improved
Am I suitable for CK?
What is involved?
Will I feel anything?

CK and aging eyes – can I get rid of my reading glasses ?
Are you unable to read the menu or prices when shopping? Have you ever had to run back into the house from the car because you left your glasses inside ? Are you sick of having multiple pairs of cheap reading glasses, bought off the shelf and hanging around your neck but needed for even the simplest near tasks?

If so, and if you had normal vision all your life until your mid-forties when you started to need reading glasses, then CK may be just what you are looking for.
Tired Eyes?   What is CK?
Conductive Keratoplasty (CK) is an exciting new procedure designed to treat farsightedness and presbyopia (the need for reading glasses) without using a laser. The CK treatment utilizes a controlled release of radiofrequency (RF) energy to increase the temperature of corneal tissue.
The treatment is applied with a probe thinner than a human hair that is introduced 8 to 32 times into the cornea in a circular pattern, which results in an increased curvature of the cornea to correct your vision.

How does CK work?
The human eye functions like a camera. The lens in a camera focuses light images onto film. In the same way, the cornea and the crystalline lens inside the eye focus light images on the retina, the back surface of the eye. Blurred vision occurs when the light does not focus precisely on the retina.

CK is specifically designed to treat hyperopia and presbyopia. Hyperopia (farsightedness) is an eye condition where people may see objects better in the distance than near. Presbyopia, or eyes, is a condition which occurs in mid- to late-40’s when it becomes difficult to focus on near objects, like menus, computers, prices when shopping and reading.

CK improves near vision in presbyopia and distance vision (and also often near vision) in hyperopia by steepening the cornea and making it a stronger lens.

This steepening corrects the point of focus so that light focuses properly on the retina. CK reshapes the cornea without changing any other parts of the eye.

Am I suitable for CK?
If you are over 45, have had good vision without glasses for most of your life and now need glasses just for reading and other near tasks (ie your arms aren’t long enough, you have presbyopia (aging eyes) and you may well be a good candidate for CK. In this case, only one eye (the non-dominanat eye) is treated.

If you had good distance vision through your teens and twenties without glasses, but then you needed glasses for distance and later reading, you probably have farsightedness or hyperopia. You may also be a good candidate for CK but will probably need the procedure in both eyes (one eye corrected for distance and the other eye for near).

To determine whether you personally are suitable for CK, we perform the “loose lens test” in the office. This simple test not only determines whether you are suitable and how much treatment you would require, but it also simulates the results of treatment so you can see if you like the result.

What is involved in the procedure
The CK procedure is performed in the office using local anesthetic drops. These drops ensure the painless application of treatment.

You will need to look directly at the light of the operating microscope during the procedure. This light is extremely strong but quite harmless to your eye, and an instrument will be placed between your lids to help you keep them open. Your co-operation in fixating on the centre of the light is of critical importance for the procedure.

During the procedure, you may hear a series of beeps. These audible tones provide Dr Collie with an indication that the appropriate energy has been delivered to your cornea This will be repeated 8 to 32 times depending on the amount of treatment you require

Overall, the procedure takes about 5 minutes.

Will I feel anything
CK is a considered painless procedure. However, you may be aware of some pressure and you may find the bright light disturbing.

Can I drive home?
No, you should arrange for a friend to drive you home from the CK procedure and you should not drive for several days afterwards. If you have had both eyes treated, you should not drive until you have seen Dr Collie and your vision has been tested.

What happens after the procedure?
You may be mildly sensitive to light and have the feeling that something is in your eye for the first few days. Sunglasses may make you more comfortable during this time. DO NOT rub your eyes for the first 3 to 5 days.

You may also experience blurred vision with or without glasses in the first week to one month after the procedure.

During the first month after the procedure, you may notice some glare, sensitivity to light, and difficulty driving at night.

Conductive Keratoplasty is the only procedure designed for farsightedness that uses radio frequency (RF) energy instead of a laser to correct your vision. Approved by the FDA in 2002 after five years of successful clinical trials in the US and abroad, CK has proven to be a safe, effective alternative to laser surgery.

Who can have CK?
Conductive Keratoplasty is intended for people with farsightedness (hyperopia) and Presbyopia. CK is not intended for people with nearsightedness (myopia). All patients considering vision correction should undergo a complete eye examination prior to the procedure.

Candidates for CK must meet the following criteria:

Be 40 years of age or older
Have hyperopia between +0.75 to +3.00 diopters
Not have had any significant changes in vision for one year 
Quicktime CK Procedure Movie
Click image on left to Download CK Procedure Movie
How does CK work?
CK uses a pen-shaped instrument with a cool tip as thin as a human hair. After application of a topical anesthetic (eye drops), we will apply radio frequency (RF) energy in a circular pattern. This pattern is along the periphery of the cornea and minimizes interference with your line of sight. The procedure is done in our office. You’re here about one hour on treatment day. The CK procedure itself takes approximately five minutes.
CK is considered painless
  CK is considered painless.
Once finished, you don’t have to wear a patch and can usually return to work within 48 hours.
Vision continues to improve
during the first month.
Near Vision Improvement
Two-thirds of our patients have good distance vision and want to improve their near vision. As a result, they only require CK in one eye. While this sounds odd, it is a technique used widely with contact lenses and Lasik for patients over age 40. The advantage with CK is that the improvement in near vision comes with very little change in distance vision in the treated eye. It is similar to the sound you hear from stereo speakers. A different sound comes from each one, but they work together to provide the entire range of sound. That is what you want to happen with your vision – to see a more complete range of distance and near again. Our goal in offering CK is to restore functional near vision for those who are over 40.

Distance Vision Improvement
One-third of our patients require CK in both eyes. They have become more far sighted with age, and benefit from having treatment in one eye to sharpen their distance vision, and treatment in the other eye to sharpen their near vision.

Are the results immediate?
Many patients notice an improvement in their vision almost immediately, in some it takes several days or longer for the improvement to be evident. Improvement in vision can be expected for the first three months after CK.

Will my vision fluctuate after CK?
Some patients experience small changes in their vision. These changes may occur up to 3 months or more after the procedure. These changes may occur for several months after the procedure. Your vision with and without glasses should become stable within the first few months after the procedure.

When can I return to work?
Many patients return to work the day after CK. If both eyes have been treated, you may need several days off work. If you perform highly intense visual tasks, you may find your work more difficult to perform for the first week or so.

Are there any scientific trials on CK?
Yes. The FDA in the United States requires very stringent trials to be performed before it approves medical products or procedures. As a result of extensive trials in the US, CK has been approved by the FDA to treat both presbyopia and hyperopia and has been described as one of the safest of all refractive surgical procedures.

What results can I expect from CK?
After CK, the vast majority of patients enjoy good vision without corrective lenses for most of life’s daily activities. However, it is important to have realistic expectations and glasses may still be needed for fine print or very detailed work.
As with any refractive procedure, CK does not guarantee perfect results. Your vision may not be perfect and you may still need to wear glasses or contact lenses in some circumstances.

Will I ever need contacts or glasses again?
For most patients CK “turns back the clock” so that glasses are not needed for most activities. However, the eye continues to “age” and while the effect of CK does not wear off, additional vision correction may be required as the process continues. The benefit obtained from CK is not lost but further treatment may be needed.

Is CK reversible?
CK is not reversible. However, in the unlikely event that CK does not work for you, at least your vision will still be able to be corrected with glasses or contact lenses.

Are there any risks or side effects of CK?

CK is a refractive procedure and as such, carries potential risks. However, CK has been described as one of the safest of all refractive procedures. It is possible, but unlikely, that CK might not work for you. In this situation, you may need to wear glasses or contacts to achieve your best vision, but unlike other refractive procedures, the possibility of actually losing “best corrected” vision is remote. During the first week after the procedure you may experience pain, discomfort, blurry vision, tearing, and/or light sensitivity as the cornea heals.
After the procedure some patients may experience fluctuation in their vision throughout the day.
You may be nearsighted for the first few months after CK. This is mild and temporary, but you may require glasses for tasks such as driving. Some patients also experience an increase in astigmatism, which may affect their vision.

What does CK cost?
The cost of CK is $1850 per eye. For patients with normal distance vision who wish to reduce their dependence on reading glasses for near, only one eye has CK treatment. If patients are long-sighted and need glasses for both distance and near, both eyes may need to be treated.

The fee also includes post-treatment care for 3 months, and any enhancements needed in that time.

If any enhancement is needed between 3 months and 1 year, this will be performed at a cost of $200.

What next?
To determine if you are suitable, see if you fit the profile below:

I am over 45
I have had good distance vision without glasses for most or all of my life
I have trouble with near vision without glasses
My eyes are otherwise healthy

If you answered YES to these statements, you may well be suitable for CK. We can determine this with a “Loose Lens” test, which also simulates for you the likely result of CK. This assessment is free.
If we find you are suitable and you would like to proceed with CK, we will take further measurements and make a time for you to see Dr Collie to assess and discuss your own case with you. We will provide you with an “Informed Consent” document for you to read and sign, and will of course happily provide you with any further information you require.

Contact Us

Canterbury Eye Specialists

208 Canterbury Rd
Canterbury 3126
Victoria, Australia

Tel: +613 9836 3677
Fax: +613 9830 0288
Conductive Keratoplasty Surgery - A new and exciting procedure Canterbury Eye Specialists

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