Zermeno-Arce A J, Ledesma-Gil G, Moreno-Mendoza R, Graue-Wiechers F
Instituto de Oftalmología FAP «Conde de Valenciana», Universidad Nacional Autónoma de México UNAM, Ciudad de México, México.
Instituto de Oftalmología FAP «Conde de Valenciana», Universidad Nacional Autónoma de México UNAM, Ciudad de México, México.
Arch Soc Esp Oftalmol (Engl Ed). 2019 Aug;94(8):405-408. doi: 10.1016/j.oftal.2019.03.019. Epub 2019 May 29.
We report the case of a 13-year-old patient who complains of an acute superior visual field scotoma in the last 48hours. Best corrected visual acuity (BCVA) was 20/20 in both eyes. The right eye fundus examination revealed torsion of a prepapillary loop in the inferior branch of the retinal artery, associated with a arterial vascular attenuation and whitenning of the inferior retina that involved both nasal and temporal branches but spared the foveal region. During the follow-up the vascular loop dissapeared and only glial tissue was seen in front of the optic nerve head. BCVA remained 20/20 in both eyes. This report shows the evolution of the vascular loop after an occlusion. The absence of blood flow produces a collapse of the arterial walls, in time the vascular loop is replaced by glial tissue.
我们报告了一例13岁患者的病例，该患者在过去48小时内出现急性上视野暗点。双眼最佳矫正视力（BCVA）均为20/20。右眼眼底检查显示视网膜动脉下支视乳头前环扭转，伴有动脉血管变细以及视网膜下变白，累及鼻侧和颞侧分支，但黄斑区未受累。随访期间，血管环消失，仅在视神经乳头前可见神经胶质组织。双眼BCVA仍为20/20。本报告展示了血管环在闭塞后的演变过程。血流缺失导致动脉壁塌陷，随着时间推移，血管环被神经胶质组织取代。
