Teixeira Anderson, Rezende Flavio A, Salaroli Camila, Souza Nonato, Sousa Benedito Antonio, Allemann Norma
Teixeira Oftalmologia, SDS Bloco D No 27, Sala 306, 70392-901 Brasília, DF, Brazil ; Department of Ophthalmology, Universidade Federal de São Paulo, São Paulo, SP, Brazil ; Department of Ophthalmology, Universidade Católica de Brasília, Brasília, DF, Brazil.
J Ophthalmol. 2013;2013:347801. doi: 10.1155/2013/347801. Epub 2013 Mar 4.
Purpose. To investigate the in vivo incision architecture using spectral domain optical coherence tomography (SD-OCT) in 23-gauge and 25-gauge transconjunctival sutureless pars plana vitrectomy (TSPPV). Methods. A prospective observational study of 22 eyes of 22 patients that underwent three-port 25-gauge (10 eyes) or 23-gauge (12 eyes) TSPPV was performed. The three sclerotomies sites in each eye were analyzed by Corneal Adapter Model (CAM) RTVue SD-OCT (Optovue Inc., Fremont, CA, USA) with wound cross-section images (longitudinal and transversal) on days 1, 7, and 30 postoperatively. Transversal and longitudinal length, location, angle between the conjunctival surface tangent and the incision plane, and architecture deformations were evaluated. Results. All patients (22 eyes) completed the study and surgeries lasted less than 60 minutes. All wounds were obliquely performed, 23-gauge mean angle was 23 ± 5°, and 25-gauge angule was 21 ± 4°. Twenty-three-gauge sclerotomy transversal mean length was 1122 ± 242 μ m and 25-gauge transversal sclerotomy mean length was 977 ± 174 μ m; 23-gauge longitudinal mean length was 363 ± 42 μ m and 25-gauge longitudinal sclerotomy mean length was 234 ±19 μ m; 23-gauge open wound thickness mean was 61 ± 28 μ m and 25-gauge open wound thickness mean was 22 ± 6 μ m. All results were statistically significant (P < 0.05). No vitreous incarceration or silicone oil residue was observed in incision sites with both gauges. Conclusions. The 23-gauge and 25-gauge architectural wound constructions were well visualized using CAM SD-OCT. Statistical differences between the two gauges were observed throughout the study period.
目的。利用光谱域光学相干断层扫描（SD - OCT）研究23G和25G经结膜无缝线玻璃体切割术（TSPPV）的体内切口结构。方法。对22例患者的22只眼进行前瞻性观察研究，这些患者接受了三通道25G（10只眼）或23G（12只眼）的TSPPV。术后第1天、第7天和第30天，使用角膜适配器模型（CAM）RTVue SD - OCT（美国加利福尼亚州弗里蒙特市Optovue公司）对每只眼中的三个巩膜切口部位进行分析，并获取伤口横截面图像（纵向和横向）。评估横向和纵向长度、位置、结膜表面切线与切口平面之间的角度以及结构变形情况。结果。所有患者（22只眼）均完成研究，手术持续时间均小于60分钟。所有伤口均为斜行，23G的平均角度为23 ± 5°，25G的角度为21 ± 4°。23G巩膜切口横向平均长度为1122 ± 242μm，25G巩膜切口横向平均长度为977 ± 174μm；23G纵向平均长度为363 ± 42μm，25G巩膜切口纵向平均长度为234 ± 19μm；23G开放伤口厚度平均为61 ± 28μm，25G开放伤口厚度平均为22 ± 6μm。所有结果均具有统计学意义（P < 0.05）。两种规格的切口部位均未观察到玻璃体嵌顿或硅油残留。结论。使用CAM SD - OCT可以很好地观察到23G和25G的伤口结构。在整个研究期间观察到两种规格之间存在统计学差异。
