Olson Jeffrey L, Wei Leslie A, Fortin Melanie J, Oliver Scott C N, Quiroz-Mercado Hugo, Mandava Naresh, Korotkin Arthur
Ophthalmic Surg Lasers Imaging Retina. 2014 Mar-Apr;45(2):153-5. doi: 10.3928/23258160-20140306-10.
During vitrectomy in phakic patients, lens damage can occur while shaving the peripheral vitreous. Modifying the vitrector with a slight bend can diminish this risk.
To assess whether the bent vitrector performs to standard, the cutting and aspiration functionality of a straight and bent cutter was tested on both the vitreous from an enucleated porcine eye and balanced salt solution. Data were analyzed using a paired two-tailed t-test for comparison of two small sample means.
The average time for removal of vitreous was 19.32 seconds with the straight cutter and 19.26 seconds for the bent cutter. There was no statistically significant difference between the removal rates (P = .87). The average time for aspiration of balanced salt solution was 14.3 seconds with the straight tip and 14.16 seconds with the bent tip. There was no statistically significant difference between the aspiration rates (P = .55).
Both unmodified and bent vitrectors demonstrate an equally efficient rate of removal of vitreous and balanced salt solution in vitro.
在有晶状体眼患者的玻璃体切除术中，在刮除周边玻璃体时可能会发生晶状体损伤。将玻璃体切割器轻微弯曲可以降低这种风险。
为评估弯曲的玻璃体切割器是否符合标准，在摘除的猪眼玻璃体和平衡盐溶液上测试了直切割器和弯曲切割器的切割及抽吸功能。使用配对双尾t检验分析数据，以比较两个小样本均值。
使用直切割器清除玻璃体的平均时间为19.32秒，使用弯曲切割器为19.26秒。清除率之间无统计学显著差异（P = 0.87）。使用直头抽吸平衡盐溶液的平均时间为14.3秒，使用弯头为14.16秒。抽吸率之间无统计学显著差异（P = 0.55）。
在体外，未改良的和弯曲的玻璃体切割器在清除玻璃体和平衡盐溶液方面显示出同样高效的速率。
