Prescription AnalysisQuestion 45 of 100
With-the-rule astigmatism typically has the cylinder axis oriented near what?
a.Axis 45
b.Axis 135
c.Axis 90 in plus cylinder
d.Axis 180 in minus cylinder
Explanation
With-the-rule astigmatism has the steeper corneal meridian vertical, corrected with minus cylinder axis at or near 180 degrees. This is the most common form of astigmatism.
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