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104. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft 2006
Abstract
Abstract
FR.07.03 Biaxial microincision versus coaxial small incision clear corneal cataract surgery Kurz S.1, Krummenauer F.2, Pfeiffer N.1, Dick H. B.1
1Department of Ophthalmology, Johannes Gutenberg-University, Mainz; 2Clinical Epidemiology and Health Economy Unit, Dresden University of Technology, Dresden Objective: To compare clinical outcomes of biaxial microincision (1.5 mm) and coaxial small-incision (2.75 mm) clear corneal cataract surgery.
Methods: Seventy eyes of 70 patients were randomly assigned (1:1) to the biaxial or conventional coaxial incision group. Both groups underwent phacoemulsification using pulsed ultrasound energy with variable duty cycles followed by microincision intraocular lens implantation. Best corrected visual acuity (BCVA), laser flare photometry value, effective phacoemulsification time (EPT) and endothelial cell count were evaluated.
Results: The treatment groups did not differ significantly in baseline characteristics (median BCVA of 20/40 preoperatively in both groups; P=0.97). On postoperative day 1, the biaxial group had better BCVA (median of 20/25 versus 20/33 for the coaxial group, P=0.018). Eight weeks after surgery, the median BCVA was 20/20 in the biaxial group and 20/25 in the coaxial group (P=0.015). Neither clinically relevant nor statistically significant differences were found in postoperative laser flare photometry values. EPT was more than 3 seconds in only 34% of biaxial versus 68% of coaxial procedures (P=0.013). At 8 weeks after surgery, endothelial cell counts were similarly decreased in the biaxial (14.5%) and coaxial (14.1%) groups (P=0.408).
Conclusions: With the biaxial microincision technique, EPT is shorter and BCVA improves more rapidly with no difference in laser flare photometry results or endothelial cell count compared to the coaxial small-incision technique for phacoemulsification.
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