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.

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。

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Logan has cut the play in half, but what it loses in detail the movie more than picks up in clarity and punch.

CNN: STORY HIGHLIGHTS