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Thread: How to convert eyeglasses number into eyesight 20/20?

  1. #1
    Join Date
    Jan 2010
    Posts
    30

    Default How to convert eyeglasses number into eyesight 20/20?

    My right eye is -4.25 and the left eye is -1.25. Does anyone know how to convert that in to eyesight with the number over 20? All I know is that it is a negative number for nearsightedness. I need to wear glasses most of the time like 90% of the day.

  2. #2
    Join Date
    Jan 2010
    Posts
    33

    Default

    -4.25 and -1.25? Are they true? That's a big difference between your eyes. Some people say it's not possible to translate it. Others would estimate it at around 20/400 and 20/70.

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