Occlusion of the central retinal vein (CRVO); hemiretinal occlusion (HRVO) occurs when the superior and inferior retinal drainage does not merge into a central retinal vein (20%) and is occluded (more like CRVO than BRVO). Two types: Nonischemic / Perfused (67%) < 10 disc areas of capillary nonperfusion on fluorescein angiogram.

2013年11月1日 · Second only to diabetic retinopathy as a leading cause of retinal vascular blindness, retinal vein occlusion (RVO) is often linked with systemic risk factors such as hypertension, arteriosclerosis, diabetes, and smoking and …

2018年1月1日 · Hemiretinal vein occlusion (HRVO): occlusion at the disc, involving either the superior or inferior hemiretina; Branch retinal vein occlusion (BRVO): occlusion of a tributary vein, typically at the site of an arteriovenous crossing; thought to be caused by com­pression from an overlying atheroscle­rotic arteriole

视网膜静脉阻塞按照阻塞发生的位置，可以分为视网膜中央静脉阻塞（CRVO）， 视网膜分支静脉阻塞 （BRVO） 半侧视网膜静脉阻塞 （HRVO）和 视网膜黄斑区小分支静脉阻塞。 1、视网膜中央静脉阻塞（CRVO） （1）基本概念. RVO是一种以疾病的主要病理改变而命名的疾病。 由于在临床工作中不可能采用创伤性的病理检查来诊断该病，所以临床诊断的依据只能是临床表现。 由此也带来两个概念上的问题：第一，病因在诊断中的作用淡化，其实本病是将具有相同临床改变 …

To characterize hemi-retinal vein occlusion (HRVO) in patients presenting to a multi-tier ophthalmology hospital network. This retrospective, hospital-based study analyzed 2,834,616 new patients between August 2010 and June 2021. Patients with a clinical diagnosis of HRVO in at least one eye were included as cases.

视网膜静脉阻塞 (retinal vein occlusion,RVO)是最常见的眼底病之一，常见的诱因主要有高血压、糖尿病以及心血管疾病等。 通常情况下，尤其是主干阻塞，90%发生在50岁以上人群，也正是由于这个原因，有人把50岁以下的病人列入“年轻型”。 事实上，随着生活和工作节奏加快以及心理压力增大逐渐成为一种普遍现象，医生们已经注意到视网膜血管性疾病正在悄悄地向着年轻化方向发展。 不过，由于年龄跨度的原因，年轻人和老年人之间的临床转归还是有些不一样。 今天这个 …

2024年1月23日 · 半侧视网膜静脉阻塞（HRVO）是一种罕见的视网膜血管疾病，它被视为视网膜中央静脉阻塞的一种变异形式。 HRVO可以是缺血性的，也可以是非缺血性的，其症状包括突然出现的上下方视野缺损以及视力显著下降。 在眼底检查中，可以观察到特征性的视网膜分支静脉闭塞，通常累及视网膜的上半侧或下半侧。 最近，Yogita Kadam教授团队对HRVO进行了一项回顾性研究，提供了一个关于HRVO临床特征、危险因素和结局的更完整、更准确的数据集，并与其他 …

Typically, an HRVO is a retinal vein occlusion that involves 2 altitudinal quadrants. An eye that has retinal hemorrhage or other biomicroscopic evidence of retinal vein occlusion (e.g., telangiectatic capillary bed) and a dilated venous system (or …

We present the hybrid reciprocal velocity obstacle (HRVO) for collision-free and oscillation-free navigation of multiple mobile robots or virtual agents. Each robot senses its surroundings and acts independently without central coordination or communication with other robots.

2021年1月4日 · We present the hybrid reciprocal velocity obstacle for collision-free and oscillation-free navigation of multiple mobile robots or virtual agents. Each robot senses its surroundings and acts independently without central coordination or …