Department of Ophthalmology, University Hospital Principe de Asturias, Alcalá de Henares (Madrid), Spain.
Curr Eye Res. 2012 Feb;37(2):120-3. doi: 10.3109/02713683.2011.623211. Epub 2011 Oct 18.
To evaluate the influence of superior sclerotomy use (vitreous cutter or illumination probe entrance) on the postoperative sclerotomy closure competency using an experimental model of vitrectomized eye.
Prospective, experimental, randomized and observer-masked experimental study in which 23 and 25-gauge transconjunctival sutureless vitrectomy was performed through oblique sclerotomies in the same cadaveric pig eye. Closure competency was determined by the resistance to intraocular fluid leak through the superior incisions in face of a progressive intraocular pressure (IOP) rise.
120 eyes included. In 52.5% of cases, the vitreous cutter probe sclerotomy showed intraocular fluid leakage first (p = 0.65). When comparing opening pressure values, there were no significant differences (p = 0.77) between the leakage pressure level of both sclerotomies depending on their use.
Different uses of superior sutureless oblique sclerotomies do not seem to influence on TSV incision mechanical resistance to IOP rise in our experimental model.
使用玻璃体切割器或照明探针入口评估巩膜上方切开术（superior sclerotomy）的使用对玻璃体切割术后巩膜切开术闭合能力的影响。
前瞻性、实验性、随机和观察者盲法实验研究，在同一只尸体猪眼上通过斜向巩膜切开术进行 23 和 25 号经结膜免缝线玻璃体切除术。通过抵抗在逐渐升高的眼内压（IOP）下通过上方切口的眼内液漏来确定闭合能力。
共纳入 120 只眼。在 52.5%的情况下，玻璃体切割器探针巩膜切开术首先出现眼内液漏（p=0.65）。比较开口压力值，两种巩膜切开术的漏液压力水平之间没有显著差异（p=0.77），这取决于它们的使用。
在我们的实验模型中，不同的巩膜上方无缝线斜向巩膜切开术的使用似乎不会影响 TSV 切口对 IOP 升高的机械阻力。
