Assertion: astigmatism | /r/HasProperty | anatomical imperfection
Facets:
value: merely
type: DEGREE
value: in the shape of the cornea
type: OTHER
Source sentences:
text: Most astigmatism does not have a recognized cause, but merely is an anatomical imperfection in the shape of the cornea, where the front curvature of the cornea is toric, rather than spherical.