Age-related cataracts can start as early as the 40s, but it is most often after age 60 that such clouding of the lens begins to affect vision.

与年龄相关的白内障有可能在四十几岁开始，不过六十岁以后，这种影响视力的晶状体混浊现象最常见。

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Slight amounts of astigmatism usually don't affect vision and don't require treatment.

轻微的散光不会影响到视觉，也无需治疗。

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Not only does corneal neovascularization seriously affect vision, but also leads to corneal transplantation failure.

角膜新生血管不但严重影响视力，而且导致角膜移植手术的失败。

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How will treatment affect my vision?

CNN: Eye melanoma

While you're at it, why not ask them for feedback on your vision for the future and how it might affect them?

FORBES: Magazine Article

The Group of international experts was tasked with preparing a succinct document that identified issues likely to affect the organisation of learning and to stimulate debate about a 21st century vision for education.

UNESCO: UK National Commission for UNESCO - Rethinking Education: Towards a global common good? Former UKNC Chair co-authors new UNESCO report