Black Hills Regional Eye Institute Laser Vision Center


NearVision Conductive Keratoplasty (CK)

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NearVision CK is intended for patients over 40 who want to reduce their dependence on reading glasses. It is the first alternative to laser treatments for farsightedness and was approved in April 2002. NearVision CK is the #1 non-laser refractive procedure in the U.S., with over 125,000 completed treatments.

How is NearVision CK performed?

NearVision CK uses radiofrequency (RF) energy, instead of a laser, to reshape the cornea. CK modifies the curvature of the cornea, making it steeper and therefore improving near vision. NearVision CK is performed using a small probe, thinner than a strand of human hair, that releases the RF energy. The energy is applied in a circular pattern in the periphery of your cornea to minimize the interference with your line of sight. This circular shrinkage pattern creates a constrictive band (like the tightening of a belt), increasing the overall curvature of the cornea. NearVision CK is a quick procedure, is done in our Refractive Surgery suite and is done with topical anesthesia eye drops.

What are the risks and side effects of NearVision CK?

NearVision CK is minimally invasive and extremely precise. During the first 24 to 48 hours after CK, you may experience tearing and some discomfort, including a foreign-object sensation in the eyes. Other side effects include glare and halos. Most patients will experience mild fluctuation in vision which usually subsides in a few weeks.

What are the results of NearVision CK?

In the FDA clinical study, nearly 87% of patients had 20/20 vision while looking at objects in the distance and were able to read phonebook-size print after having the procedure.

Who is a candidate for NearVision CK?

NearVision CK is recommended for patients with farsightedness up to +2.50. You must complete a screening to determine if you are a good patient for NearVision CK. Below are some of the criteria:

  • Over 40 years of age
  • Had good uncorrected vision and now need reading glasses

Why do CK instead of LASIK?

CK is minimally invasive compared to LASIK. There is no need to make a corneal flap as CK is performed on the front surface of the eye. Although LASIK is a low-risk procedure, CK has an even smaller chance of a permanent complication.

To learn more about CK click here.