PDF(Pubmed)
Abstract：
Acute macular neuroretinopathy (AMN) affects the outer retina and is most likely induced by non-inflammatory ischaemia of the retinal deep capillary plexus and choriocapillaris. A man in his early 20s developed Valsalva retinopathy following weightlifting at the gym and presented with blurring of vision in the left eye 1 month after the initial retinal haemorrhages had resolved. A diffuse, purplish, donut-shaped, perifoveal lesion was seen on funduscopy and was well defined by an optical coherence tomography angiography (OCTA) en face image in the left eye. Outer retinal changes on optical coherence tomography (OCT) and a dense co-localised scotoma on a visual field (VF) examination confirmed the diagnosis of AMN, and the patient was started on a tapering dose of oral steroids. Improvement was seen in OCT, OCTA and VF during the 6-month follow-up visit. The use of OCTA en face imaging enabled the accurate identification of the lesion in the affected layers of the retina.
摘要：
急性黄斑神经视网膜病变（AMN）影响外视网膜，很可能是由视网膜深毛细血管丛和脉络膜毛细血管的非炎性缺血引起的。一名20多岁的男子在健身房举重后出现了Valsalva视网膜病变，并在最初的视网膜出血消退后1个月出现左眼视力模糊。一个弥漫的，紫色,甜甜圈形,在眼底镜检查上可以看到中央凹周围的病变，并且通过左眼的光学相干断层扫描血管造影（OCTA）和面部图像得到了很好的定义。光学相干断层扫描（OCT）的外部视网膜变化和视野（VF）检查的密集共定位暗点检查证实了AMN的诊断。患者开始逐渐减少口服类固醇的剂量。在OCT中看到了改善，6个月随访期间的OCTA和VF。使用OCTA进行面部成像可以准确识别受影响的视网膜层中的病变。
