青壮年近视患者玻璃体后脱离1期的部位与形态特征

摘要

Objective To evaluate the features of position and morphology of stage 1 posterior vitreous detachment (PVD) in young adult myopes.Methods In a prospective case series study,a total of 305 young adults (607 eyes) with myopia,posterior vitreous detachment was examined under 2D and 3D images by optical coherence tomography.Results There were 141 eyes at stage 1 PVD.The percent of PVD located within one,two or three quadrants was 26.95％,59.57％,and 13.48％,respectively.In 24 eyes (17.02％) there was a tendency for PVD to be located in the superior quadrant.But the inferior,temporal or nasal quadrants were also the original quadrants of incomplete PVD.And the PVD in two different quadrants could not form a connection.The morphology of stage 1 PVD was V-shaped in 2D images and dish-shaped in 3D images.Conclusion Not all PVD in young adult myopes started in the superior quadrant.The initial stage of PVD was V-shaped and had multifocal traits at times.%目的 探讨青壮年近视患者玻璃体后脱离(PVD)起始部位与形态特征.方法 前瞻性病例研究.应用光学相干断层成像(OCT)技术对305例(607眼)青壮年近视患者的PVD进行检查,并对其中的1期PVD 141眼进行玻璃体视网膜2D和3D图像分析.结果 141眼1期PVD患者中,一个象限、两个象限、三个象限PVD的发生率分别为26.95％、59.57％及13.48％;单纯一个象限PVD中,上方方位发生率较高,为24眼(17.02％),但也可见单纯下方、鼻侧或颞侧PVD;两个象限PVD彼此可以不相连.其2D形态呈V形,3D形态呈碟形.结论 青壮年近视患者PVD不完全起始于上方,早期呈V形,有时呈多灶性.