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Any optometrists/Vision experts about?!

blargwork
blargwork Posts: 11 Forumite
in Praise, vent & warnings
Because I had one free eye test and a half-price test I have ended up with two prescriptions from two different shops and they are different!?

One is sph -1 cyl -.5 Axis 110 and sph -1.25 cyl -.5 axis 85

The other is sph -.75 cyl -.5 axis x90 and sph -1 cyl -.75 axis x90


???

Comments

  • Paul_Varjak
    Paul_Varjak Posts: 4,627 Forumite
    Part of the Furniture 1,000 Posts Photogenic Combo Breaker
    I am not an optometrist but I don't think it is an exact science! The Optometrist is relying on your reliability in giving him/her feedback
  • jdturk
    jdturk Posts: 1,636 Forumite
    blargwork wrote: »
    Because I had one free eye test and a half-price test I have ended up with two prescriptions from two different shops and they are different!?

    One is sph -1 cyl -.5 Axis 110 and sph -1.25 cyl -.5 axis 85

    The other is sph -.75 cyl -.5 axis x90 and sph -1 cyl -.75 axis x90


    ???


    And the reason for having two tests was.......
    Always ask ACAS
  • blargwork
    blargwork Posts: 11 Forumite
    jdturk wrote: »
    And the reason for having two tests was.......

    ...Irrelevant to this thread
  • blargwork
    blargwork Posts: 11 Forumite
    Paul_Varjak wrote: »
    I am not an optometrist but I don't think it is an exact science! The Optometrist is relying on your reliability in giving him/her feedback

    Are you saying I'm unreliable? :p;)
  • Paul_Varjak
    Paul_Varjak Posts: 4,627 Forumite
    Part of the Furniture 1,000 Posts Photogenic Combo Breaker
    No, I am not saying you are unreliable! I am saying that the precision of the test is probably no better than plus/minus 0.125 dioptres, hence the reason that the minimum dioptre step is 0.25. Sometimes you will be measured at -0.75, other times it will be -1.0! When doing the test, your eye, my eye, or anybody else's eye is simply not discerning enough!

    You may find a better answer on the health thread.
  • jdturk
    jdturk Posts: 1,636 Forumite
    blargwork wrote: »
    ...Irrelevant to this thread

    You are correct but still interesting to know why.....
    Always ask ACAS
This discussion has been closed.
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