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Related Experiment Videos

Reverse geometry contact lens fitting after corneal refractive surgery.

Raul Martin1, Guadalupe Rodriguez

  • 1The Eye Institute, Valladolid, Spain. raul@ioba.med.uva.es

Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|December 7, 2005
PubMed
Summary

Reverse geometry rigid gas permeable (RGP) contact lenses effectively correct irregular corneal surfaces after refractive surgery. These lenses improve visual acuity and offer comfortable wear for patients experiencing vision loss.

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Area of Science:

  • Ophthalmology
  • Corneal Refractive Surgery
  • Contact Lens Technology

Background:

  • Myopic corneal refractive surgery can lead to irregular corneal surfaces.
  • Post-surgical complications may reduce best spectacle-corrected visual acuity (BSCVA).

Purpose of the Study:

  • To evaluate the effectiveness of reverse geometry rigid gas permeable (RGP) contact lens fitting.
  • To address irregular corneal surfaces resulting from myopic refractive surgery complications.

Main Methods:

  • Fitted reverse geometry RGP contact lenses in nine eyes with post-myopic refractive surgery complications.
  • Assessed visual acuity changes using Snellen lines compared to spectacle correction.

Main Results:

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  • 55.6% of eyes improved BSCVA by ≥2 lines with RGP lenses.
  • 22.2% improved by 1 line; 22.2% maintained BSCVA.
  • No eyes experienced a loss of BSCVA; all patients reported excellent tolerance and visual quality.

    • Conclusions:

    • Reverse geometry RGP contact lens fitting is effective for surgically induced irregular corneal surfaces.
    • These lenses significantly improve visual acuity and provide comfortable wear.
    • RGP lenses are a viable option when surgical retreatment is not feasible or desired.