人眼后皮质前玻璃体囊袋的光相干断层扫描影像特征观察

目的观察人眼后皮质前玻璃体囊袋(PPVP)的OCT影像特征。方法回顾性临床研究。2012年5月至2017年2月于成都市第三人民医院眼科行OCT检査发现PPVP的受检者107名173只眼纳入研究。行频域OCT(SD-OCT)、扫频光源OCT(SS-OCT)检査分别为103、70只眼。SD-OCT检査采用德国Heidelberg公司Spectralis OCT仪进行。SS-OCT检查采用日本Topcon公司DRI OCT仪的玻璃体增强扫描模式。观察PPVP不同类型OCT成像差异以及影像特征。结果所有受检眼SD-OCT.SS-OCT检查均可见PPVP结构清晰,表现为黄斑区前弱反射船形腔隙,前界为玻璃体胶原,后界为玻璃体皮质;PPVP鼻侧存在一弱反射的无凝胶区域(Martegiani区),两者之间存在连接通道。其形态特点两种检查方式所见相似,但SS-OCT对PPVP的成像更清晰。结论人眼PPVP的OCT影像特征为黄斑区前弱反射船形腔隙,前界为玻璃体胶原,后界为玻璃体皮质;其鼻侧存在Martegiani区。

The image characteristics of optical coherence tomography of the posterior cortical anterior vitreous capsular bag in human eyes

Objective To observe the OCT image characteristics of the posterior cortical anterior vitreous capsular bag(PPVP)in human eyes.Methods A retrospective clinical study.From May 2012 to February 2017,107 PPVP patients(173 eyes)diagnosed by OCT in Ophthalmology Department of The Third People's Hospital of Chengdu were included in the study.One hundred and three eyes underwent examination of frequency-domain OCT(SD-OCT)and 70 eyes underwent examination of frequency-scanning light source OCT(SS-OCT),respectively.SD-OCT the German Heidelberg Spectralis OCT instrument.SS-OCT was performed by the vitreous enhancement scan mode of Japan's Topcon DRI OCT instrument.The differences of different types of PPVP OCT imaging and image characteristics were observed.Results SD-OCT and SS-OCT showed that the PPVP structure was clear and manifested as macular weakly reflective in the shape of a boat-shaped cavity,the front boundary was vitreous collagen,and the rear boundary was vitreous cortex.There was a weakly reflective Martegiani area on the nasal side of PPVP,and there was a connection channels between them.The two examinations showed a similar pattern,but SS-OCT with the clearer imaging of PPVP.Conclusions The OCT image of PPVP in the human eye is characterized by an anterior weakly reflecting boat-shaped cavity in the macula,with anterior border of vitreous collagen and posterior border of vitreous cortex.Martegiani area is located on the nasal side.