Assertion: astigmatism's meridian | /r/HasProperty | the steepest curve
Facets:
Source sentences:
text: Consider a football shape lying on its side, and the vertical meridian of the football is the steepest curve.
text: ■ “Against-the-rule” astigmatism occurs when the horizontal meridian of the cornea is steepest—the horizontal meridian of the football is the steepest curve.