Department of Ophthalmology, University Hospital Principe de Asturias, Alcalá de Henares (Madrid), Spain.
Curr Eye Res. 2012 Sep;37(9):809-12. doi: 10.3109/02713683.2012.678545. Epub 2012 Jun 11.
To evaluate the influence of the cannula removal maneuver on the postoperative incisional vitreous incarceration using an experimental model of vitrectomized eye.
Prospective, experimental, randomized and observer-masked experimental study in which 23-gauge transconjunctival sutureless vitrectomy was performed through oblique sclerotomies in cadaveric pig eyes. Once the vitrectomy was finished, one of the superior cannulas was removed with the light probe introduced through it, and the other cannula was extracted with the cannula plug inserted. Postoperative incisional vitreous incarceration was evaluated by ultrasound biomicroscopy (UBM).
60 eyes included. Considering the 60 superior sclerotomies whose cannulas were extracted with the light pipe inserted, vitreous incarceration was observed in 35% of them. On the other hand, 71.6% of the incisions whose cannulas were removed with the cannula plug inserted showed vitreous incarceration (p = 0.00013).
Interposing the light probe through the cannula when it is removed seems to reduce the postoperative wound vitreous incarceration rate in our experimental model.
通过玻璃体切除眼的实验模型，评估套管移除操作对术后切口玻璃体嵌顿的影响。
前瞻性、实验性、随机和观察者盲法的实验研究，通过尸体猪眼的斜向巩膜切开术进行 23 号经结膜无缝线玻璃体切除术。玻璃体切除完成后，通过其中一个套管插入光探头以移除一个上侧套管，通过插入套管塞移除另一个套管。通过超声生物显微镜（UBM）评估术后切口玻璃体嵌顿。
共纳入 60 只眼。考虑到用插入光探头的套管提取的 60 个上巩膜切开术，其中 35%出现玻璃体嵌顿。另一方面，用套管塞移除套管的 71.6%的切口出现玻璃体嵌顿（p=0.00013）。
在我们的实验模型中，当移除套管时通过套管插入光探头似乎可以降低术后伤口玻璃体嵌顿的发生率。
