thanks Chuck! I am ordering these for a co-worker and was confused! On Apr 25, 1:31 pm, Chuck Knight <[email protected]> wrote: > It's unusual for the astigmatism to match so perfectly...you might double > check the values with your doctor. > > Anyway, the values you posted translate to: > > Left eye: > sphere 0, > cylinder -0.25, > axis 110 > > Right eye: > sphere 0, > cylinder -0.25 > axis 110 > > So you would enter in the information, accordingly. > > Given the error you got at G4U, I'm guessing that you had entered in a 0 > value for the cylinder. > > You see, the cylinder and axis are related. Cylinder is how strong the > astigmatism correction has to be. Axis is the "twist" that it needs, so > that the astigmatism correction is in the right place. If you enter in a > value of 0 for cylinder, then what sense would it make to have an axis > value? > > -- Chuck Knight > > On Sat, Apr 25, 2009 at 11:51 AM, [email protected] < > > [email protected]> wrote: > > > can someone help me with this prescription > > > plano -0.25 x 110 > > plano -0.25 x 110 off to the far right it says D.U.O > > whatever that means > > > I tried entering this in the goggles4u prescription form but it kept > > saying that the cylinder need a value or else the axis had to be zero. > > I don't understand what this means. Thanks for the help! --~--~---------~--~----~------------~-------~--~----~ Check us out at the oft-updated http://glassyeyes.blogspot.com!
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