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一种罕见疾病是导致青年群体失明的主要原因
地球是一个奇迹科技|全球将国家地理中文网设为星标方能收到正常推送视网膜色素变性是一种罕见的视力障碍,它影响着眼球后部一层叫视网膜的组织,如这张扫描电子显微镜彩照所示。视网膜检测光线的部分是由视杆和视锥感光细胞构成的,我们所看见的一切都有赖于它们。图中下三分之一描绘了血管和神经层。光必须透过这一层,才 ...
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