Hirashima Takafumi, Utsumi Takao, Hirose Miou, Oh Hideyasu
Department of Ophthalmology, Hyogo Prefectural Amagasaki General Medical Center, Higashinanima-cho 2-17-77, Amagasaki, Hyogo 660-8550, Japan.
J Ophthalmol. 2017;2017:8320909. doi: 10.1155/2017/8320909. Epub 2017 Aug 27.
To evaluate the influences of 27-gauge vitrectomy on corneal topographic conditions.
Fifty-six eyes of 56 patients undergoing 27-gauge vitrectomy were retrospectively studied. Twenty-three eyes with epiretinal membrane (ERM), 23 eyes with macular hole (MH), and 10 eyes with proliferative diabetic retinopathy (PDR) were included. Forty-five of the 56 eyes underwent 27-gauge phacovitrectomy (group 1), and the remaining 11 eyes underwent 27-gauge vitrectomy alone (group 2). Corneal topography was obtained with a wave-front analyzer preoperatively and at 1 and 3 months postoperatively. The corneal topographic parameters evaluated were the average corneal power, regular astigmatism, spherical aberration, and higher-order aberration (HOA).
In between-group analyses of groups 1 and 2, no significant differences were observed regarding the changes of the 4 parameters from the baseline to 1 and 3 months postoperatively. No significant differences in the changes of all parameters from the baseline to 1 and 3 months postoperatively were also observed between MH group and the other two groups. A significant difference in the change of HOA from the baseline to 1 month postoperatively was observed between ERM and PDR group however, the difference disappeared at 3 months.
27-gauge vitrectomy did not induce substantial changes in the corneal topographic conditions.
评估27G玻璃体切除术对角膜地形图状况的影响。
回顾性研究56例接受27G玻璃体切除术患者的56只眼。其中包括23只患有视网膜前膜（ERM）的眼睛、23只患有黄斑裂孔（MH）的眼睛和10只患有增殖性糖尿病视网膜病变（PDR）的眼睛。56只眼中的45只接受了27G晶状体玻璃体切除术（第1组），其余11只眼仅接受了27G玻璃体切除术（第2组）。术前及术后1个月和3个月使用波前分析仪获取角膜地形图。评估的角膜地形图参数包括平均角膜屈光力、规则散光、球差和高阶像差（HOA）。
在第1组和第2组的组间分析中，从基线到术后1个月和3个月，这4个参数的变化未观察到显著差异。MH组与其他两组之间从基线到术后1个月和3个月所有参数的变化也未观察到显著差异。然而，ERM组和PDR组之间从基线到术后1个月HOA的变化存在显著差异，但在3个月时差异消失。
27G玻璃体切除术未引起角膜地形图状况的实质性变化。
