Tandogan Tamer, Khoramnia Ramin, Auffarth Gerd Uwe, Koss Michael Janusz, Choi Chul Young
David J Apple International Laboratory for Ocular Pathology and International Vision Correction Research Centre (IVCRC), Department of Ophthalmology, University of Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
David J Apple International Laboratory for Ocular Pathology and International Vision Correction Research Centre (IVCRC), Department of Ophthalmology, University of Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul 03181, Republic of Korea.
J Ophthalmol. 2016;2016:9695165. doi: 10.1155/2016/9695165. Epub 2016 Apr 3.
Purpose. To describe the characteristics of intraocular fluidics during cataract surgery in swine eyes with prior vitrectomy. Methods. We prepared three groups of enucleated swine eyes (nonvitrectomized, core, and totally vitrectomized). Irrigation and aspiration were performed (2.7 mm conventional sleeved phacosystem) using a balanced saline solution mixed with a water-soluble radiopaque contrast medium at 1 : 1 ratio. We imaged the eyes using a digital fluoroscopy system (DFS) during phacoemulsification and compared the characteristics of the intraocular fluid dynamics between the groups. Results. The anterior chamber depth (ACD) after the commencement of irrigation differed between groups (2.25 ± 0.06 mm; 2.33 ± 0.06 mm; 3.17 ± 0.11 mm), as well as the height of the fluid flowing from the anterior chamber into the posterior cavity that was identified by lifting up the iris to correct the infusion deviation syndrome (0.00 ± 0.00 mm; 0.41 ± 0.04 mm; 2.19 ± 0.35 mm). Conclusions. DFS demonstrated differences in fluid dynamics during phacoemulsification in swine eyes with or without prior vitrectomy. In completely vitrectomized eyes, the large ACD, which developed during phacoemulsification, could be reduced by lifting the iris and allowing the fluid to shift to the posterior cavity. Recognizing the differences in fluidics of vitrectomized eyes as compared to those of the nonvitrectomized eyes may reduce the frequency of intraoperative complications.
目的。描述先前接受玻璃体切除术的猪眼白内障手术期间眼内流体动力学的特征。方法。我们制备了三组摘除的猪眼（未行玻璃体切除术、行核心玻璃体切除术和完全玻璃体切除术）。使用与水溶性不透射线造影剂按1∶1比例混合的平衡盐溶液，通过2.7毫米传统套管式超声乳化系统进行灌注和抽吸。在超声乳化过程中，我们使用数字荧光透视系统（DFS）对眼睛进行成像，并比较各组之间眼内流体动力学的特征。结果。灌注开始后，前房深度（ACD）在各组之间存在差异（2.25±0.06毫米；2.33±0.06毫米；3.17±0.11毫米），通过抬起虹膜以纠正灌注偏差综合征所确定的从前房流入后房的液体高度也存在差异（0.00±0.00毫米；0.41±0.04毫米；2.19±0.35毫米）。结论。DFS显示，在先前接受或未接受玻璃体切除术的猪眼中，超声乳化过程中的流体动力学存在差异。在完全玻璃体切除的眼中，超声乳化过程中出现的较大前房深度可通过抬起虹膜并使液体转移至后房来降低。认识到玻璃体切除的眼睛与未行玻璃体切除的眼睛在流体动力学方面的差异，可能会降低术中并发症的发生率。
