Then there's orthokeratology or Ortho-k lenses… hard contact lenses worn only at night that reshape the wearer's cornea while they sleep… so that they can see at a distance during the day.

然后是形镜（Ortho-k），这是一种只在晚上佩戴硬隐形眼镜，可以在佩戴睡觉时重他们，这样他们就可以在白天看到远西。

And then sometimes you get contacts so that or contact lenses so people don't know that you're wearing glasses.

有时你会选择隐形眼镜或接触镜，这样别人就不知道你戴着眼镜了。