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    fantastic! Thank you so much! I also got 4.5 at...

    fantastic! Thank you so much! I also got 4.5 at 54 !!!
  2. Replies
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    7,990

    problem regarding prism

    I am having some problems doing the following question. Any help would be really appreciated.

    The following thin prisms are placed in close contact before the right eye;

    8 base 45
    2 base 270...
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