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Rigid gas permeable contact lens fitting after radial keratotomy

A M Lee1, P R Kastl

  • 1Department of Ophthalmology, Tulane University School of Medicine, New Orleans, Louisiana 70112, USA.

The CLAO Journal : Official Publication of the Contact Lens Association of Ophthalmologists, Inc
|February 25, 1998
PubMed
Summary

Rigid gas permeable (RGP) contact lenses can successfully fit eyes after radial keratotomy (RK) surgery. Postoperative measurements are sufficient for fitting, making preoperative keratometry unnecessary for successful outcomes.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Corneal Surgery

Background:

  • Radial keratotomy (RK) is a refractive surgical procedure.
  • Residual refractive errors can occur after RK.
  • Fitting post-RK eyes with contact lenses can be challenging.

Purpose of the Study:

  • To determine if rigid gas permeable (RGP) contact lenses can be fitted to patients who have undergone radial keratotomy (RK).
  • To evaluate the efficacy of using postoperative keratometry measurements for RGP lens fitting in post-RK eyes.

Main Methods:

  • Thirteen eyes from eight post-RK patients with residual refractive errors were included.
  • Rigid gas permeable (RGP) lenses were used for fitting.
  • Base curve selection was based on postoperative keratometry readings, as preoperative data was unavailable.

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Main Results:

  • Significant visual improvements were observed, averaging 3.85 Snellen lines.
  • Pre-fitting visual acuities ranged from 20/30 to 20/200.
  • Post-fitting visual acuities improved, with 7 out of 13 eyes achieving 20/20 vision.

Conclusions:

  • Fitting post-RK eyes with RGP contact lenses is feasible.
  • Preoperative keratometry measurements are not essential for successful RGP lens fitting in post-RK patients.
  • An empirical fitting approach using postoperative keratometry is effective.