Becton Dickinson and Company, 1 Becton Drive, Franklin Lakes, NJ, USA.
BMC Ophthalmol. 2009 Dec 21;9:15. doi: 10.1186/1471-2415-9-15.
Previous research has suggested that the silicon BD Atomic Edge knife has superior performance characteristics when compared to a metal knife and performance similar to diamond knife when making various incisions. This study was designed to determine whether a silicon accurate depth knife has equivalent performance characteristics when compared to a diamond limbal relaxing incision (LRI) knife and superior performance characteristics when compared to a steel accurate depth knife when creating limbal relaxing incision.
Sixty-five ophthalmic surgeons with limbal relaxing incision experience created limbal relaxing incisions in ex-vivo porcine eyes with silicon and steel accurate depth knives and diamond LRI knives. The ophthalmic surgeons rated multiple performance characteristics of the knives on Visual Analog Scales.
The observed differences between the silicon knife and diamond knife were found to be insignificant. The mean ratio between the performance of the silicon knife and the diamond knife was shown to be greater than 90% (with 95% confidence). The silicon knife's mean performance was significantly higher than the performance of the steel knife for all characteristics. (p-value < .05)
For experienced users, the silicon accurate depth knife was found to be equivalent in performance to the diamond LRI knife and superior to the steel accurate depth knife when making limbal relaxing incisions in ex vivo porcine eyes. Disposable silicon LRI knives may be an alternative to diamond LRI knives.
先前的研究表明，与金属刀相比，硅 BD 原子边刀具有优越的性能特点，并且在进行各种切口时，其性能与钻石刀相似。本研究旨在确定硅精确深度刀在与钻石缘松解切口（LRI）刀相比时是否具有同等的性能特点，以及与钢精确深度刀相比时是否具有优越的性能特点，从而在进行缘松解切口时。
65 名有缘松解切口经验的眼科医生使用硅和钢精确深度刀以及钻石 LRI 刀在离体猪眼上进行缘松解切口。眼科医生使用视觉模拟量表对刀的多种性能特点进行评分。
硅刀和钻石刀之间的观察到的差异被认为是微不足道的。硅刀的性能与钻石刀的平均比值大于 90%（置信区间为 95%）。对于所有特征，硅刀的平均性能明显高于钢刀。（p 值<.05）
对于有经验的使用者来说，硅精确深度刀在离体猪眼上进行缘松解切口时，其性能与钻石 LRI 刀相当，优于钢精确深度刀。一次性硅 LRI 刀可能是钻石 LRI 刀的替代品。
