Assertion: astigmatism's cornea | /r/HasAspect | two curves
Facets:
Source sentences:
text: A cornea with astigmatism has two curves, one flat curve and one that is steep.
text: It happens when your cornea or eye lens has an abnormal shape or curve, keeping light from fixating on your retina.
text: A cornea which has astigmatism has two curves, a flat curve and a steep curve