Early onset keratectasia after photorefractive keratectomy in a case showing Vertical D topographic pattern

Semin Ophthalmol. 2012 May-Jul;27(3-4):52-5. doi: 10.3109/08820538.2012.667495.

Abstract

Purpose: We describe a case of early onset keratectasia after photorefractive keratectomy (PRK) in a patient with Vertical D topographic pattern in one eye and suspected keratoconus in the other eye.

Methods: A 31-year-old woman underwent bilateral PRK: attempted correction was -8.00-2.00 × 30° in her right eye (RE) and -4.50-1.50 × 150° tabo in her left eye (LE). Preoperative corneal thickness was 512 µm in the RE and 520 µm in the LE. Preoperative topography showed an asymmetric bow-tie pattern and skewed axis in RE and a Vertical D pattern in LE. Intended maximum ablation was 91 µm in RE and 66 µm in LE.

Results: Three months postoperatively the patient showed early topographic signs of bilateral keratectasia, evolved to manifest keratectasia after six years.

Conclusions: Although rare after PRK, keratectasia may occur even following moderate (66 µm) surface ablation in eyes with Vertical D topographic pattern in one eye and controlateral suspected keratoconus.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Age of Onset
  • Corneal Diseases / etiology*
  • Corneal Diseases / pathology
  • Corneal Topography
  • Female
  • Humans
  • Photorefractive Keratectomy / adverse effects*
  • Postoperative Complications