Excimer Laser Correction of Astigmatism: Principles and Clinical Results

  • Jean-Luc FebbraroEmail author
  • Benjamin Prat
  • Hamza N. Khan


Excimer laser photorefractive keratectomy (PRK) was first introduced by Trokel in 1983 to correct myopia [1]. Seiler and coauthors in 1988 proposed this technology to correct astigmatism with T cuts, but the refractive results were not superior to incisional techniques [2]. In 1991, McDonnell published promising clinical results with photoastigmatic refractive keratectomy (PARK) using toric ablation [3]. Since then, more than 20 million excimer laser procedures have been performed, and this technology has become the method of choice to correct both spherical and astigmatic errors. As a result, corneal refractive surgery is the second most frequently performed ocular procedure worldwide, just after cataract surgery.


Astigmatism Correction Tor Ability Refractive Outcomes Excimer Laser Photorefractive Keratectomy Laser In Situ Keratomileusis (LASIK) 
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Supplementary material

Video 10.1

Clinical cases 1–4 (MP4 130201 kb)


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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Jean-Luc Febbraro
    • 1
    • 2
    Email author
  • Benjamin Prat
    • 3
  • Hamza N. Khan
    • 4
  1. 1.Rothshild FoundationParisFrance
  2. 2.Private practiceParisFrance
  3. 3.Université Paris Sud, Faculté des Sciences D’OrsayOrsayFrance
  4. 4.University of British ColumbiaVictoriaCanada

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