May 2008
Volume 49, Issue 13
ARVO Annual Meeting Abstract  |   May 2008
Photorefractive Keratectomy in Moderate Keratoconus
Author Affiliations & Notes
  • J. Hjortdal
    Ophthalmology, Aarhus University Hospital, Aarhus, Denmark
  • A. Ivarsen
    Ophthalmology, Aarhus University Hospital, Aarhus, Denmark
  • N. Ehlers
    Ophthalmology, Aarhus University Hospital, Aarhus, Denmark
  • Footnotes
    Commercial Relationships  J. Hjortdal, None; A. Ivarsen, None; N. Ehlers, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 4324. doi:
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      J. Hjortdal, A. Ivarsen, N. Ehlers; Photorefractive Keratectomy in Moderate Keratoconus. Invest. Ophthalmol. Vis. Sci. 2008;49(13):4324.

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose: : Despite that thinning of the cornea is one feature of keratoconus it has been reported that photorefractive keratectomy (PRK) by an excimer laser may improve vision or increase the ability to wear contact-lenses. We report our experience with this treatment modality.

Methods: : 19 eyes with contact-lens intolerant moderate keratoconus (steepest K < 60 D; corneal thickness > 0.40 mm) were treated during the period 1998 to 2007. A Zeiss-Meditec MEL-70 or MEL-80 excimer laser was used. Treatments were performed as topography supported ablation profiles (TOSCA or CRS-TOPO). Pre- and postoperative examinations included spectacle refraction, best spectacle-corrected visual acuity (BSCVA), and uncorrected visual acuity (UCVA). Follow-up was at least 6 months.

Results: : Best corrected visual acuity improved two or more lines in 14 of 19 eyes (74%) and one eye lost two or more lines (5%). After a successful post-operative period of 6 years, one eye underwent lamellar transplantation 7 years after PRK.

Conclusions: : In moderate keratoconus photorefractive keratectomy (PRK) may improve spectacle corrected visual acuity and postpone corneal transplantation permanently or at least for some time.

Keywords: keratoconus • refractive surgery • cornea: clinical science 

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