放射状视神经切开术后一年出现视网膜中央静脉阻塞且视网膜血流进一步减少。
Central retinal vein occlusion with further reduction of retinal blood flow one year after radial optic neurotomy.
作者信息
Horio Naoichi, Horiguchi Masayuki
机构信息
Department of Ophthalmology, Fujita Health University School of Medicine, 1-98 Toyoake, Aichi 470-1192, Japan.
出版信息
Am J Ophthalmol. 2005 May;139(5):926-7. doi: 10.1016/j.ajo.2004.10.053.
PURPOSE
To report a case of central retinal vein occlusion (CRVO) that had vitrectomy with radial optic neurotomy (RON), but the retinal blood flow (RBF) was still reduced 1 year later.
DESIGN
Interventional case report.
METHODS
An 80-year-old woman had undergone vitrectomy and RON for a CRVO. She had a complete ophthalmic examination, including the RBF analysis using the dye dilution method before and after RON.
RESULTS
Seven months after RON, her visual acuity improved from 20/50 to 20/25, and her foveal thickness was decreased from 733 to 213 microm. Indocyanine green angiography demonstrated chorioretinal anastomoses. At 1 year postoperatively, the RBF was reduced from 23.2 to 18 0.1 pixel(2)/s, and the foveal thickness was increased to 767 microm. Her visual acuity decreased to 20/100. The chorioretinal anastomoses were still patent.
CONCLUSIONS
These results demonstrate that a further reduction of RBF can occur after RON, and blood flow in the chorioretinal anastomoses may be insufficient to prevent the event.
目的
报告一例视网膜中央静脉阻塞（CRVO）患者，其接受了玻璃体切除术联合放射状视神经切开术（RON），但术后1年视网膜血流（RBF）仍降低。
设计
介入性病例报告。
方法
一名80岁女性因CRVO接受了玻璃体切除术和RON。她接受了全面的眼科检查，包括在RON前后使用染料稀释法进行RBF分析。
结果
RON术后7个月，她的视力从20/50提高到20/25，黄斑中心凹厚度从733微米降至213微米。吲哚菁绿血管造影显示脉络膜视网膜吻合。术后1年，RBF从23.2降至18.0 1像素（2）/秒，黄斑中心凹厚度增加至767微米。她的视力降至20/100。脉络膜视网膜吻合仍通畅。
结论
这些结果表明，RON术后RBF可能会进一步降低，脉络膜视网膜吻合处的血流可能不足以预防这一情况。
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