高度近视视网膜劈裂患者手术前后谱域光相干断层扫描影像学特征

目的 观察高度近视视网膜劈裂患者行玻璃体切割手术前后谱域光相干断层扫描(SD-OCT)的影像学特征.方法 回顾性分析SD-OCT检查确诊为高度近视视网膜劈裂不伴黄斑裂孔行玻璃体切割手术治疗的8例患者8只眼临床资料.所有患者均行矫正视力、屈光度、前置镜眼底检查、A/B型超声及SD-OCT检查.所有患眼视网膜均存在外层劈裂.其中,合并中层或内层劈裂5只眼,伴中心凹脱离5只眼.前置镜检查结果显示,8只眼中,黄斑中心凹出现局限性浅脱离3只眼;未发现明显异常5只眼.后极部出现巩膜葡萄肿7只眼.SD-OCT检查结果显示,后极部视网膜呈现明显向下凹陷的弧形条带7只眼;未见明显向下凹陷的弧形条带1只眼.所有患眼均接受玻璃体切割加内界膜剥除手术治疗.手术后1、3、6个行时SD-OCT复查,对比观察手术前后视网膜后极部形态结构影像检查特征变化.结果 手术后6个月,后极部劈裂消失视网膜基本贴附原位6只眼;仍存在中心凹脱离1只眼;出现旁中心凹裂孔1只眼.手术后6个月,矫正视力由手术前0.15提高至0.8者1只眼,SD-OCT检查显示,视网膜光感受器内外节(IS/OS)连接光带层连续性大部分恢复.矫正视力由手术前0.01和0.05提高至0.1和0.15者2只眼;保持不变者5只眼.SD-OCT检查结果显示,手术后IS/OS连接光带层均仍有缺失.结论 高度近视视网膜劈裂在SD-OCT中形态表现多样,以外层劈裂居多.

Abstract：

Objective To observe the image features of high myopia with retinoschisis by spectraldomain optical coherence tomography (SD-OCT). Methods The clinical data of eight patients (eight eyes)of high myopia with retinoschisis were retrospective analyzed. All patients were diagnosed by SD-OCT (Topcon 3D OCT-1000), had no macular holes and underwent vitrectomy including internal limiting membrane (ILM) peeling and gas tamponade. All patients also underwent visual acuity, refraction,pre-mirror fundus examination and A/B-mode ultrasound examination. Visual acuity and SD-OCT were followed up at one, three and six months after surgery. Before surgery, pre-mirror fundus examination revealed shallow foveal detachment in 3/8 eyes, posterior scleral staphyloma in 7/8 eyes. SD-OCT showed concave arc stripes in 7/8 eyes, and outer retinoschisis in 8/8 eyes, middle or inner retinoschisis in 5/8 eyes and foveal detachment in 5/8 eyes. Results Six months after surgery, posterior retinoschisis disappeared in six eyes, foveal detachment still presented in one eye and parafoveal hole occurred in one eye. The corrected visual acuity improved from the 0. 15 to 0. 8 in one eye which had a restored continuous inner segment/outer segmen (IS/OS) line by SD-OCT. The corxected visual acuity improved from 0. 01 to 0. 1 in one eye, from 0. 05 to 0. 15 in one eye, not changed in five eyes. There was no continuous IS/OS line in those patients by SD-OCT. Conclusions SD-OCT shows a variety of morphological features of myopic retinoschisis which could be cured anatomically and functionally by vitrectomy combined ILM peeling. The continuity of IS/OS layer from SD-OCT could help to interpret the vision recovery after the operation.

Image features of spectral-domain optical coherence tomography of high myopia with retinoschisis

Objective To observe the image features of high myopia with retinoschisis by spectraldomain optical coherence tomography (SD-OCT). Methods The clinical data of eight patients (eight eyes)of high myopia with retinoschisis were retrospective analyzed. All patients were diagnosed by SD-OCT (Topcon 3D OCT-1000), had no macular holes and underwent vitrectomy including internal limiting membrane (ILM) peeling and gas tamponade. All patients also underwent visual acuity, refraction,pre-mirror fundus examination and A/B-mode ultrasound examination. Visual acuity and SD-OCT were followed up at one, three and six months after surgery. Before surgery, pre-mirror fundus examination revealed shallow foveal detachment in 3/8 eyes, posterior scleral staphyloma in 7/8 eyes. SD-OCT showed concave arc stripes in 7/8 eyes, and outer retinoschisis in 8/8 eyes, middle or inner retinoschisis in 5/8 eyes and foveal detachment in 5/8 eyes. Results Six months after surgery, posterior retinoschisis disappeared in six eyes, foveal detachment still presented in one eye and parafoveal hole occurred in one eye. The corrected visual acuity improved from the 0. 15 to 0. 8 in one eye which had a restored continuous inner segment/outer segmen (IS/OS) line by SD-OCT. The corxected visual acuity improved from 0. 01 to 0. 1 in one eye, from 0. 05 to 0. 15 in one eye, not changed in five eyes. There was no continuous IS/OS line in those patients by SD-OCT. Conclusions SD-OCT shows a variety of morphological features of myopic retinoschisis which could be cured anatomically and functionally by vitrectomy combined ILM peeling. The continuity of IS/OS layer from SD-OCT could help to interpret the vision recovery after the operation.