Global Insight

Reverse Geometry Corneal GP Fit for Post Radial Keratotomy

By Dr. Kelly Voltz, OD, FAAO

Case History

A 67‐year‐old Caucasian male with history of radial keratotomy forty years prior was referred for contact lens fitting of both eyes.

The patient’s ocular history was significant for a hyperopic shift following RK of both eyes and fluctuations in vision throughout the day. After undergoing cataract extraction and intraocular lens placement of both eyes via scleral tunnel, the patient found no relief in his symptoms.

Upon slit lamp examination, the patient’s right cornea exhibited 24 radial incisions and 2 astigmatic keratotomy incisions. The left cornea exhibited 32 radial incisions and 2 astigmatic keratotomy incisions. Both central corneas had central sub‐epithelial scarring.

CL Fitting

The patient was fit in Valley Contax’s Reverse geometry corneal GP design. Visual acuity improved from 20/40 OD, 20/30 OS to 20/25 OD, 20/20 OS.

  Final Lens Design BC Power Dia 2nd Curve 3rd Curve Material Tint
OD Rev Geo 35.00 -3.00 11.00 43.00 Standard, 2 steep tuck inferior quad Optimum Extra Blue
OS Rev Geo 33.50 -2.25 11.00 43.00 2 Flat, 2 steep tuck inferior quad Optimum Extra Clear

Thank you to Dr. Kelly Voltz, O.D. for contributing to Global Insight.

Dr. Kelly Voltz, OD, FAAO, FSLS
Optometrist at Mosaddegh Eye Institute, Content Review Board Member at American Optometric Association (AOA)
University of Virginia Neuroscience graduate 2013
Oregon Health and Science University Fellowship in Medical Contact Lens 2018