why is one number a + and the other a -? Farsighted and nearsighted??
My RX is sph +0.50 cyl -0.75 (both eyes)
R axis 165 L axis 5
In:
What usually causes the really extreme variances is having mixed astigmatism, where one meridian is nearsighted and the other is farsighted due to the astigmatism. Meridians are the east/west and north/south lines of the eye.
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