Modern Medicine

What does an autorefractor do?
Answered by Discovery Fit & Health
  • Discovery Fit & Health

    Discovery Fit & Health

  1. An autorefractor is a machine used to check your vision. It uses infrared light, which humans can’t see but the machine can sense when it is reflected from your eye. The machine measures the size and shape of your ocular fundus (a ring directly opposite your pupil at the back of the eye) when you are successfully focusing on an image inside the autorefractor. This information helps in calculating the level of vision correction that you need, and whether this will be carried out by contact lenses, glasses or surgery.

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