Abstract

P 088

Surgical induced astigmatism after implantation of anterior chamber lenses (Artisan/Verisyse and foldable Artiflex I/II)

Kern T.¹, Strenger A.¹, Kohnen T.^1,2
1Department of Ophthalmology, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany; ²Cullen Eye Institute, Baylor College of Medicine, Houston, USA

Objective: The implantation of a non-foldable phakic anterior chamber lens (Artisan/Verisyse) requires a larger incision than a foldable anterior chamber lens. The aim of this investigation was to compare the surgically induced astigmatism of the Artisan/Verisyse implantation (6 mm incision) with the foldable Artiflex implantation (3.2 mm incision).
Methods: In a retrospective study the surgically induced astigmatism (preoperative to 1 month postoperative) of 11 patients in both groups (Artisan/Artiflex n=21 eyes and Artiflex n=22 eyes) was assessed. The incisions were always placed at 12.00 h. The Artisan/Verisyse was inserted through a 6.0 mm and the Artiflex through a 3.2 mm incision. The surgical induced astigmatism was calculated with the Holladay-Cravy-Koch formula. Data were taken from videokeratometry (Orbscan, Bausch and Lomb). Significance was calculated by the Wilcoxon-Mann-Whitney-test.
Results: The mean surgical induced astigmatism was 1.5±0.6 dpt in the Artisan/Verisyse group. The mean surgical induced astigmatism after Artiflex implantation was significant lower with 0.58±0.35 dpt (P<0.001).
Conclusions: The surgical induced astigmatism was lower for foldable phakic anterior chamber iris-fixated lens compared to PMMA IOLs. The foldable lenses enable a higher precision in refractive surgeries due to better corneal stability, the PMMA version a higher effect on astigmatism reduction.

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