分枝静脉阻塞仅次于糖尿病性视网膜病变为最常见的视网膜血管病,它常伴有视力障碍。阻塞都发生化的病如高血压病及糖尿病最常见于分枝静脉阻塞的患者。分枝静脉阻塞最多见于颞侧网膜,因为颞侧视网膜动、静脉交叉较多,而鼻侧视网膜血管阻塞不易为病人所觉察(颞侧阻塞影响黄斑部有视力改变),引起症状的阻塞发生在大的交叉处,在视乳头上或第 Branch vein occlusion is the second most common retinal vascular disease after diabetic retinopathy, which is often accompanied by visual impairment. Obstructive occlusive diseases such as hypertension and diabetes are most common in patients with branch vein occlusion. Most of the branch vein occlusion seen in the temporal omentum, because the temporal retina, arterial and venous cross more, and the nasal retina vascular obstruction is not easy for the patient to detect (temporal obstruction affect the macular vision changes), causing the occlusion of symptoms At the large intersection, on the optic disc or the first