Zhang Yang, Zheng Lin, Bian Ailing, Zhou Qi
Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Dongdan Shuaifuyuan 1, Beijing, 100730, China.
Int Ophthalmol. 2018 Apr;38(2):697-703. doi: 10.1007/s10792-017-0519-1. Epub 2017 Apr 25.
To compare the postoperative intraocular pressure (IOP) of eyes following pars plana vitrectomy (PPV) combined with intravitreal silicone oil (SO) tamponade by Corneal Visualization Scheimpflug Technology (CST), Goldmann applanation tonometry (GAT) and non-contact tonometry (NCT).
Thirty-eight participants who had undergone PPV combined with SO tamponade to treat vitreoretinal diseases were enrolled. Postoperative IOP measurements were obtained using CST, NCT and GAT. Inter-device agreement was assessed by Bland-Altman analysis. The correlation coefficient was used to describe the potential postoperative factors affecting the postoperative IOP differences between each device.
Bland-Altman analysis revealed the bias between CST and GAT, between CST and NCT, and between GAT and NCT to be -0.2, 2.1 and 2.4 mmHg, respectively. CST and GAT correlated well with each other. NCT values were lower than those of GAT and CST (all p < 0.05), whereas CST values did not differ from the GAT readings. Central corneal thickness, corneal biomechanical properties and age showed significant correlation with the differences of CST-NCT and GAT-NCT.
In SO tamponade eyes, NCT obtains lower IOP than other tonometry techniques, and CST is highly consistent with GAT. CST offers an optional non-contact method for measuring postoperative IOP in SO tamponade eyes.
通过角膜可视化Scheimpflug技术（CST）、Goldmann压平眼压计（GAT）和非接触眼压计（NCT）比较玻璃体切割术（PPV）联合玻璃体腔硅油（SO）填充术后患眼的眼压（IOP）。
纳入38例接受PPV联合SO填充治疗玻璃体视网膜疾病的患者。使用CST、NCT和GAT测量术后眼压。采用Bland-Altman分析评估不同设备间的一致性。用相关系数描述影响各设备术后眼压差异的潜在术后因素。
Bland-Altman分析显示，CST与GAT之间、CST与NCT之间以及GAT与NCT之间的偏差分别为-0.2、2.1和2.4 mmHg。CST与GAT相关性良好。NCT值低于GAT和CST值（均p < 0.05），而CST值与GAT读数无差异。中央角膜厚度、角膜生物力学特性和年龄与CST-NCT及GAT-NCT的差异显著相关。
在硅油填充眼中，NCT测得的眼压低于其他眼压测量技术，且CST与GAT高度一致。CST为测量硅油填充眼术后眼压提供了一种可选的非接触方法。
