Arcuate keratotomy for high postoperative keratoplasty astigmatism performed with the intralase femtosecond laser

Luca Buzzonetti, Gianni Petrocelli, Antonio Laborante, Emilio Mazzilli, Mario Gaspari, Paola Valente

Research output: Contribution to journalArticle

Abstract

PURPOSE: To evaluate the refractive and keratometric effect of arcuate keratotomy performed using the IntraLase femtosecond laser (Abbott Medical Optics) in patients with high postoperative keratoplasty astigmatism. METHODS: Nine eyes of nine patients (mean age 45±7.5 years; mean spherical equivalent refraction -2.50±3.60 diopters [D]) who had undergone a penetrating keratoplasty were considered. The subjective refraction was measured, and corneal thickness and keratometric parameters were calculated by the Pentacam (Oculus Optikgeräte). All uncomplicated surgeries were performed with the IntraLase femtosecond laser. Paired 70° arc length incisions were performed at 80% depth of the corneal thickness. The mean optical zone was 5.9 mm. The side cut was 90°. All incisions were performed in the graft itself. Mean change in best spectacle-corrected visual acuity (BSCVA), refractive and keratometric astigmatism, and spherical equivalent refraction was evaluated. Follow-up was 3 months. Refractive and keratometric data were analyzed using vector analysis as described by Alpins. A paired Student t test was used to compare preoperative and 3-month postoperative data. A P value .05). The mean refractive astigmatism decreased by 6.00 D (P

Original languageEnglish
Pages (from-to)709-714
Number of pages6
JournalJournal of Refractive Surgery
Volume25
Issue number8
DOIs
Publication statusPublished - Aug 2009

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ASJC Scopus subject areas

  • Ophthalmology
  • Surgery

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