Algorithm to correct hyperopic astigmatism with the Nidek EC-5000 excimer laser

P. Vinciguerra, D. Epstein, M. Azzolini, P. Radice, M. Sborgia

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

BACKGROUND: The efficacy of a new ablation algorithm for the correction of hyperopic astigmatism with the Nidek EC-5000 excimer laser was evaluated. METHODS: Twenty-five eyes with mean preoperative hyperopia of +3.76 ± 1.70 D and a mean hyperopic cylinder of 2.20 ± 0.80 D underwent photorefractive keratectomy (PRK) using a new algorithm with the Nidek EC-5000 excimer laser (software version 3.0). The new algorithm differed from previous algorithms in that less tissue was removed for the same amount of diopters, and there was less of a dioptric gradient between the optical zone and the transition zone. Mean preoperative spectacle-corrected visual acuity was 0.8 ± 0.09. Minimum follow-up was 6 months. RESULTS: Mean postoperative spectacle corrected visual acuity (geometric mean) increased significantly to 0.89 ± 0.1. The mean sphere decreased by 3.08 D and the mean cylinder by 1.60 D. CONCLUSION: Hyperopic PRK using the Nidek EC-5000 excimer laser with this new algorithm for hyperopic astigmatism appears to be safe and effective.

Original languageEnglish
JournalJournal of Refractive Surgery
Volume15
Issue number2 SUPPL.
Publication statusPublished - 1999

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Excimer Lasers
Astigmatism
Photorefractive Keratectomy
Visual Acuity
Hyperopia
Software

ASJC Scopus subject areas

  • Ophthalmology

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Algorithm to correct hyperopic astigmatism with the Nidek EC-5000 excimer laser. / Vinciguerra, P.; Epstein, D.; Azzolini, M.; Radice, P.; Sborgia, M.

In: Journal of Refractive Surgery, Vol. 15, No. 2 SUPPL., 1999.

Research output: Contribution to journalArticle

Vinciguerra, P, Epstein, D, Azzolini, M, Radice, P & Sborgia, M 1999, 'Algorithm to correct hyperopic astigmatism with the Nidek EC-5000 excimer laser', Journal of Refractive Surgery, vol. 15, no. 2 SUPPL..
Vinciguerra, P. ; Epstein, D. ; Azzolini, M. ; Radice, P. ; Sborgia, M. / Algorithm to correct hyperopic astigmatism with the Nidek EC-5000 excimer laser. In: Journal of Refractive Surgery. 1999 ; Vol. 15, No. 2 SUPPL.
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