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Related Experiment Videos

Repeated radial keratotomy

Y Hu1, P Liu, L Qi

  • 1Department of Ophthalmology, Beijing Friendship Hospital.

[Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology
|May 1, 1995
PubMed
Summary
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Repeated radial keratotomy effectively reduced myopia and astigmatism in 38 cases. This secondary surgical approach improved uncorrected visual acuity with few complications.

Area of Science:

  • Ophthalmology
  • Refractive Surgery

Background:

  • Radial keratotomy (RK) is a refractive surgical procedure to correct myopia.
  • Some patients may require secondary or repeated procedures to further improve visual acuity or manage refractive errors.

Purpose of the Study:

  • To evaluate the efficacy and safety of repeated radial keratotomy (RK) in eyes that had previously undergone the procedure.
  • To assess changes in refractive error and visual acuity following secondary RK incisions.

Main Methods:

  • A retrospective analysis of 38 cases (59 eyes) that underwent repeated RK.
  • Secondary incisions were performed along the existing scars of previous RK procedures.
  • Follow-up averaged 13 months post-reoperation.

Main Results:

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  • Mean spherical equivalent (SE) decreased by 2.30D (from -3.78D to -1.48D).
  • Mean keratometry decreased by 2.04D (from 40.15D to 38.11D).
  • Mean uncorrected visual acuity improved by 5 lines, with few reported complications.

Conclusions:

  • Repeated radial keratotomy is an effective option for reducing myopia and astigmatism in previously operated eyes.
  • The procedure demonstrates a favorable safety profile and can significantly enhance uncorrected visual acuity.