眼底出血是许多眼底血管性病变的一种共同表现。全身的小动脉、小静脉、毛细血管都处于组织器官的深层,不能在活体上直接观察。只有眼底即视网膜血管可以通过瞳孔直接观察到。因此全身性血管、血液性病变都可以从视网膜及其血管反应出来,同时也可直接引起视网膜的出血性病变。由此可见,眼睛的确是医生观察全身小血管变化的“窗口”。 Fundus hemorrhage is a common manifestation of many vascular diseases of the fundus. Small arteries throughout the body, small veins, capillaries are deep in the tissues and organs, can not be directly observed in vivo. Only retinal retinal blood vessels can be directly observed through the pupil. Therefore, systemic vascular, blood-borne lesions can react from the retina and its blood vessels, but also can directly cause retinal hemorrhagic lesions. This shows that the eye is indeed a “window” for doctors to observe changes in small blood vessels throughout the body.