放射状视神经切开术治疗视网膜中央静脉阻塞

目的观察放射状视神经切开术（RON）治疗视网膜中央静脉阻塞（CRVO）的临床疗效。方法回顾分析12例CRVO患者RON治疗的临床资料。所有患者均进行常规视力和眼底检查、眼底照相和荧光素眼底血管造影（FFA）、光相干断层扫描（OCT）检查。12只患眼视力均在0.1以下，伴有严重出血、视网膜水肿。手术时用显微玻璃体视网膜刀（MVR）或CRVO切开刀（CRVO knife）刺入视盘鼻侧，切口深达筛板及筛板后且于筛板区鼻侧切开。手术后随访观察2~15个月，平均随访时间为6.5个月。对比观察手术眼视力、视野及眼底改变情况。结果12只患眼的RON手术均获成功。9只眼视力有不同程度提高，占75%，6只眼手术后视力大于或等于0.1，占50%。眼底检查、眼底照相和FFA、OCT检查显示视网膜水肿、出血逐渐消失，静脉怒张、纡曲明显好转；视网膜浆液性脱离减轻或消失；黄斑囊样水肿消退，3只眼黄斑中心凹恢复。3只眼手术中视神经出血，晚期4只眼视神经切开部位萎缩。结论视盘鼻侧边缘的RON安全可行，可以改善CRVO患眼的视力，缓解视网膜出血和水肿。(中华眼底病杂志,2005,21:10-12)

Radial optic neurotomy for central retinal vein occlusion

ObjectiveTo observe the clinical therapeutic effects of radial optic neurotomy (RON) for central retinal vein occlusion (CRVO).MethodsThe clinical data of 12 patients (12 eyes) with CRVO who had undergone RON were retrospectively analyzed. The patients were examined by visual acuity and fundus examination, photography, fundus fluorescein angiography, and optical coherence tomography (OCT). The visual acuities of all of the 12 eyes with severe hemorrhage and retinal edema were less than 0.1. A microvitreoretinal blade or CRVO knife was penetrate into the nasal side of the optic disk, and the incision reached the cribriform plate and even the back, and then dissected at the nasal side of the cribriform plate. The postoperative follow-up period lasted 2 to 15 months with the mean of 6.5 months, and the visual acuity, the condition of visual field and ocular fundus of the eyes undergone the surgery were observed.ResultsIn 12 eyes undergone RON successfully, the visual acuity after the surgery improved more or less in 9 (75%), and more than or up to 0.1 in 6. The results of the examinations showed that the retinal edema and hemorrhage disappeared gradually, varicosity mitigated, retinal serous detachment mitigated or disappeared, and macular cystoid edema faded; macular fovea recovered in 3 eyes, optic nerve had a hemorrhage during the operation in 3 eyes, and the dissected part of optic nerve became atrophic afterward in 4.ConclusionsRON performed at the edge of the nasal side of the optic disc is safe and effective, which may improve the visual acuity of the eyes with CRVO and mitigate retinal hemorrhage and edema.(Chin J Ocul Fundus Dis, 2005,21:10-12)