Photorefractive keratectomy to treat myopia and astigmatism after radial keratotomy and penetrating keratoplasty

J Cataract Refract Surg. 1995 May;21(3):268-73. doi: 10.1016/s0886-3350(13)80130-7.


Fifteen eyes with an initial myopia between -5.00 diopters (D) and -12.00 D were treated with radial keratotomy (RK) followed by photorefractive keratectomy (PRK) at least 6 months later and observed for 6 months to 24 months. Five eyes that had penetrating keratoplasty (PKP) were treated for residual ametropia by PRK and followed for up to two years. For the RK-treated eyes, mean pre-PRK refraction was -4.00 D sphere and + 1.25 D cylinder, which improved to -0.52 D sphere and + 0.73 D cylinder. Incidence of complications, including corneal haze, was extremely low in both the RK and PKP groups. In summary, PRK is a valuable method for correcting ametropia following RK and PKP, with risks similar to that for eyes having PRK as the initial refractive procedure.

MeSH terms

  • Adult
  • Aged
  • Astigmatism / etiology
  • Astigmatism / surgery*
  • Cornea / surgery*
  • Female
  • Follow-Up Studies
  • Humans
  • Keratoplasty, Penetrating / adverse effects*
  • Keratotomy, Radial / adverse effects*
  • Laser Therapy*
  • Male
  • Middle Aged
  • Myopia / etiology
  • Myopia / surgery*
  • Prognosis
  • Visual Acuity
  • Wound Healing