艾滋病的眼底改变:①棉絮状白斑:其发现率高达53%、40%,常见于高血压、糖尿病、全身性红斑狼疮、皮肌炎等。组织学上是视网膜神经纤维层的变性肿胀,可见到细胞支架的结构。电镜下显示由轴索中细胞质小体集合而成。这是由于轴索浆质输送停止所产生,其原因是视网膜血管局限性缺血。棉絮状白斑一些消失又有一些新产生,其量 Fundus changes in AIDS: ① cottony white spots: the discovery rate as high as 53%, 40%, common in hypertension, diabetes, systemic lupus erythematosus, dermatomyositis and so on. Histologically, the degenerative swelling of the retinal nerve fiber layer shows the structure of the cell scaffold. Electron microscopy showed axonal cytoplasmic bodies formed by the collection. This is due to the suspension of axonal delivery resulting from focal ischemia of the retinal vessels. Cotton wool white spots disappear and some new produce, the amount