Efeito da posição do bisel da caneta de facoemulsificação no endotélio corneano

Translated title of the contribution: Effect of bevel position on the corneal endothelium after phacoemulsification

Eduardo Raskin, Jayter Silva Paula, Antonio Augusto Velasco Cruz, Roberto Pinto Coelho

Research output: Contribution to journalArticle

Abstract

Purpose: To compare the extent of corneal endothelial (CE) cell loss changes in two groups of eyes submitted to phacoemulsification, with the conventional bevel-up tip position in one eye and with the bevel-down tip position in the fellow eye. Methods: This prospective clinical trial comprised 25 patients with bilateral cataracts subjected to lens removal by phacoemulsification with the conventional bevel-up tip position (GI) in one eye and with the bevel-down tip position (GII) in the fellow eye. The nuclei were graded clinically on the basis of hardness. The endothelial cell count (ECC) was evaluated preoperatively and 1, 3 and 6 months postoperatively. Total surgical time, effective ultrasound time and complications were also compared between the groups. Statistical analysis was performed by the Tukey Studentized Range test, with repeated measures for the selected periods. For the other parameters a paired t test was used. Data are presented as mean ± SD, with the level of significance set at p<0.05. Results: The mean effective ultrasound time was 8.08 ± 6.75 seconds in group I and 7.00 ± 5.75 seconds in GII (P=0.1792) and total surgical time was 10.01 ± 2.46 minutes in GI and 9.86 ± 2.17 minutes in GII (p=0.6267), respectively. The paired t test revealed no statistical differences between the groups. Complications were also similar between the groups. Mean endothelial cell count loss was 6.9% in GI and 2.8% in GII at one month; 6.9% in GI and 3.6% in GII at three months and 11.9% in GI and 7.6% in GII at six months postoperatively. Comparison of endothelial cell count (ECC) showed a statistically significant difference between the groups during the postoperative period. Conclusion: The conventional bevel-up tip position has a negative effect on corneal endothelial cells compared with the bevel-down position. Since the results of other surgical parameters were similar, the bevel-down tip position should be considered as an option in non-complicated phacoemulsification.

Translated title of the contributionEffect of bevel position on the corneal endothelium after phacoemulsification
Original languagePortuguese
Pages (from-to)508-510
Number of pages3
JournalArquivos brasileiros de oftalmologia
Volume73
Issue number6
DOIs
StatePublished - Nov 1 2010

Keywords

  • Cataract extraction
  • Comparative study
  • Endothelium, corneal/surgery
  • Phacoemulsification/methods

ASJC Scopus subject areas

  • Ophthalmology

Fingerprint Dive into the research topics of 'Effect of bevel position on the corneal endothelium after phacoemulsification'. Together they form a unique fingerprint.

  • Cite this