Does it matter if the prescription corrects for a lot of astigmatism?
AJH
Magnifiers on spectacles
Apr 26, 2009
25 Replies
According to my optician friend, the astigmatism correction is on the back of the lens. Thus, you only need to consider the front curvature.
Steve R.
No - essentially you are ordering a stronger set of reading glasses. If your local optician is friendly they will measure the exact value for the viewing distance and magnification you want.
I doubt if its possible to correct 4.5 diopters of cylinder on the rear of my lenses. They just aren't thick enough and are aspherical too.
I wish I'd thought of that years ago. Thanks for the heads-up.
Just ordered some from
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(my normal online specs supplier). I put my normal prescription in and then added +3 to the "Reading Addition" entry for both eyes. Just hoping that +3 is about right.
Cheers, Rumble
It's the other way round on the pair I'm wearing now. It seems to be your way round on my bifocals -- easier to make bifocals that way.
Over the years the type and amount of correction on each face has varied with my specs.
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