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Cyl, Axis and Prism

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  • 26-05-2010 10:36am
    #1
    Yitzhak Rabin
    Banned (with Prison Access) Posts: 7,225 ✭✭✭


    Hi, I got my eye test done today in specsavers, with the intention of then buying online. After the test I got the optician to write the prescription on a card for me. I noticed that she didn't fill in the Cyl, Axis, and Prism values, so I went back and checked with the receptionist if there was a mistake, and she said no. I didn't push it, as it was obvious at this stage I wouldn't be buying glasses off them and had only availed of their eye-test as it was on offer, and I'm a tightarse :D

    The optician had said to me, that other than being short sighted I had no abnormalities and my eyes were perfect.

    So, is there standard measures for the Cyl, Axis and Prism values? and if so what are they?

    Thanks in advance.


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    #2
    Shamanic
    Closed Accounts Posts: 385 ✭✭Shamanic


    no, the cyl and axis correspond to eachother. If you have CYL it means you have astigmatism which then needs to be set on an AXIS (from 1 to 180). Obviously you dont have astigmatism so these have been left blank.

    The Prism is a completely different thing that corresponds to muscle imbalances, which, as its been left blank, doesnt apply to you.


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