脑中风是老年健康的大敌,一旦发作,轻则致瘫,重可致死,使不少老年人谈之色变。不过脑中风前多有预兆信号,留心这些“蛛丝马迹”,对于早发现,早预防,防止中风发作,还是有重要意义的。 1.一过性黑蒙 即突然出现眼前发黑,数秒或数十秒内恢复。出现黑蒙,说明视网膜有短暂性缺血。研究 Stroke is the enemy of health in old age. In the event of an attack, the stroke may cause paralysis and may lead to death. As a result, many elderly people talk about color change. However, there are warning signs before the stroke, to pay attention to these “clues” for early detection, prevention, prevention of stroke, or is of great significance. 1. A transient darkness that appears suddenly black, recover within seconds or tens of seconds. Appears dark, indicating that the retina has transient ischemia. the study