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.

然后是角膜塑形镜（Ortho-k），这是一种只在晚上佩戴的硬隐形眼镜，可以在佩戴者睡觉时重塑他们的角膜，这样他们就可以在白天看到远处的东西。