How similar are these cylinder readings on eyeglass prescription?

Discussion in 'Glasses' started by jkj2000, Oct 21, 2008.

  1. jkj2000

    jkj2000 Guest

    I can't quite make out a value from an optometrist's prescription.
    The left eye cylinder reading either says "+0.7" or "+0.75". Is this
    a big deal or nothing to especially worry about either way?
    jkj2000, Oct 21, 2008
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  2. jkj2000

    otisbrown Guest

    Dear Friend,

    Why not ask the person who wrote the "prescription"?

    But, failing that, it is generally true that prescriptions are
    written in 1/4 diopter "steps".

    The value is probably +3/4 diopters.

    otisbrown, Oct 21, 2008
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  3. jkj2000

    Mike Ruskai Guest

    It's +0.75. You won't find increments smaller than a quarter diopter (0.25)
    on a prescription. Your eyes can vary by more than that throughout the day.
    Mike Ruskai, Oct 21, 2008
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