视网膜静脉阻塞
( Retinal vein occlusion,RVO)
视网膜中央静脉阻塞
(central retinal vein occlusion,CRVO)
多由于视网膜中央静脉的主干或其分支发生血栓所致。多 发生于单眼,偶见于双眼。 多见于50岁以上中老年人,但可发生在各个年龄段。
病因
Branch Vein and Artery Occlusion (#5,2), Old, Angiogram
Comment: The vascular connections are much better seen in the angiogram. The corkscew vessels leak as well as the artery. The artery may have been occluded at the kink. Loss of capillary network is seen in the area of previous combined occclusion.
下1/2视网膜静脉阻塞 ,有较多棉絮斑,视乳头下半部有水肿。
上1/2视网膜静脉阻塞,出血浓密,杂有棉絮斑,视乳头无明显水肿。
右眼颞上黄斑小分支静脉阻塞 视盘荧光:未见异常, 网膜血管:颞上方血管扩张,管壁着染,片状出血呈遮 蔽荧光.黄斑:暗区缩小
Branch Vein and Artery Occlusion (#5,1), Old Comment: There are corkscew vessels near the temporal raphe. They indicate connections between the inferior and superior vein.