Thread: Astigmatism
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Old 07-06-2013, 10:10 PM
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GraemeT (Graeme)
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Join Date: May 2010
Location: Sydney, Australia
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Quote:
Originally Posted by skytry View Post
hi Graeme,
the CYL reading for both eyes is -0.75,
this is a single vision implant,
the eye with the new lens, and the original eye not touched,

regards,
Peter.
The Rx needs a cylinder axis, and usually a spherical component, even if it's zero, something like: R plano -0.75 x 175°. This allows the lens to be oriented at the correct angle relative to the horizontal line through the centres of both pupils, in this case 175°. You don't have to worry about that, it's your optometrist's job to put it in the right place!
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