Peg Achenbach, O.D., F.A.A.O.
Vice President of Professional Services

On-K fitting, or alignment fitting, is described as having the radius of curvature of the optical zone of the contact lens equal to the radius of the flattest K reading. This is one of the most straightforward methods of contact lens fitting. The goal in fitting Duette lenses is to have the GP portion parallel to the radius of the cornea, similar to the alignment fitting of traditional GP lenses.

By James K. Kirchner, O.D.

For both UltraHealth and Clearkone, the fit (apical clearance) is determined for both lenses using a vault system. But the biggest difference between the two lens types, beyond the material composition, is the use of the skirts.

By Jeffrey Sonsino, O.D., F.A.A.O., Vanderbilt Eye Institute

Shortly after UltraHealth was introduced, I became one of the top fitters of the lens in the U.S. We have a moderately busy keratoconus practice, seeing between 21-35 keratoconic patients per week among other complex anterior segment cases.

By Jeffrey Sonsino, O.D., F.A.A.O.

Many articles have been written about proper patient selection being critical for success with multifocal lenses. We're told to choose patients who have realistic (i.e., low) expectations, non-critical vision needs, and a history of diminishing success with monovision.

By James K. Kirchner, O.D.

Consistency. A word that’s very important to us in Independent Optometry. We strive to be consistent in the delivery of excellent services to our patients. We desire to have a consistent effort from each team member on a day-to-day basis.