minus over-correction vs plus under-correction

Discussion in 'Optometry Discussion' started by vg1, Apr 21, 2016.

  1. vg1

    vg1

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    Hello everone,

    I am corresponding with an OD over email. He said:

    "I would NOT like her to have -1.00 lenses with -1.50 astigmatism... I am OK with her having plus undercorrection to plano -1.50 in both eyes...
    ...
    When the PO suggests minus lens over-correction or surgery... that is the time to make the trip to see me. "

    Can you please explain

    minus over-correction
    plus under-correction

    Thank you.
     
    vg1, Apr 21, 2016
    #1

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