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巨型裂孔即为达到或超过70的裂孔,它的预后不良,原因为:(1) 裂孔缘处的视网膜常有翻转;(2) 视网膜的裂缝呈放射状伸向后极部;(3) 裂孔范围大,达180以上;(4) 玻璃体内或视网膜附近存在严重的细胞增殖伴有玻璃体视网膜牵引。玻璃体切割术和内固定技术的出现,改善了这种视网膜脱离的治疗。本文评价这些新技术并与常规手术方法作比较。作者所用的常规方法为裂孔边缘冷凝,然后以保存的巩膜作巩膜上折叠条带以及经巩膜的视网膜下放液。存在视网膜翻转时,经睫状体平部伸入一小钩试将其翻转复位,如作内眼手术,则经睫状体平部作玻璃体切割,必要时以玻璃体切
The giant fissure is a fissure that reaches or exceeds 70 and its prognosis is poor because of (1) the retina at the fissure edge is often overturned, (2) the retinal fissure extends radially toward the posterior pole, (3) the extent of the fissure Large, up to 180 or more; (4) there is a serious cell proliferation in the vitreous or near the retina with vitreoretinal traction. The advent of vitrectomy and internal fixation improves this treatment of retinal detachment. This article assesses these new techniques and compares them with routine surgical procedures. The conventional method used by the authors was to condense the edge of the hole and then use the preserved sclera for folding the scleral fold band and transscleral subretinal fluid. The existence of retinal flipping, the ciliary body flat into a small hook try to flip it reset, such as for intraocular surgery, the ciliary body by flat for vitrectomy, if necessary, to vitrectomy