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[Corneal complications after PRK for hyperopia].

Christoph Lwowski1, Thomas Kohnen2

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|May 31, 2019
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Summary
This summary is machine-generated.

Transepithelial photorefractive keratectomy (PRK) for hyperopia outside recommended limits can lead to persistent visual complications. Subsequent retreatments did not resolve haze, scarring, and regression, resulting in permanent vision loss.

Keywords:
HazeHypermetropiaPRKRefractiveRegression

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Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Corneal Surgery

Background:

  • Epithelial hyperplasia, haze, and regression are known complications following photorefractive keratectomy (PRK).
  • Treating hyperopia outside established guidelines may increase complication risks.
  • The Committee for Refractive Surgery (KRC) sets limits for safe and effective PRK procedures.

Purpose of the Study:

  • To report a case of severe visual complications after PRK for hyperopia.
  • To evaluate the outcomes of retreatment and further ablation in a complex case.
  • To highlight the risks associated with performing refractive surgery outside KRC recommendations.

Main Methods:

  • Case report detailing a patient who underwent PRK for hyperopia exceeding KRC limits.
  • Description of subsequent retreatment procedures including repeat PRK and corneal ablation.
  • Long-term follow-up to assess visual acuity, haze, scarring, and regression.

Main Results:

  • The patient developed significant epithelial hyperplasia, peripheral haze, and regression post-PRK.
  • Two retreatments, including an additional ablation, failed to resolve the complications.
  • Persistent haze, scarring, and regression occurred in both eyes, leading to permanent visual acuity reduction.

Conclusions:

  • Performing PRK for hyperopia outside KRC guidelines carries a high risk of complications.
  • Retreatment and further ablation may not effectively manage severe post-PRK haze, scarring, and regression.
  • Cases with such complications may result in irreversible visual impairment, underscoring the importance of adhering to surgical guidelines.