视网膜色素变性(反相)的原因造成失明的逐步退化的杆和锥感光的视网膜。
Retinitis pigmentosa (RP) causes blindness due to the progressive degeneration of rod and cone photoreceptors in the retina.
黄斑是视网膜的一小部分，具有感光和精细视物功能。黄斑点退化导致黄斑变性，从而影响视力。过半以上的75岁以上老年人深受黄斑变性的困扰。
Caused by the deterioration of the macular - the tiny part of the retina responsible for picking up colour and fine detail - macular degeneration affects the vision of more than half of over-75s.
在年龄相关性黄斑变性在视网膜中心的视网膜细胞的退化，造成了视觉的中心部分，成为模糊或波状。
In age-related macular degeneration, retinal cells in the center of the retina degenerate and cause the center part of vision to become blurry or wavy.
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