Assertion: astigmatism's cornea | /r/CapableOf | change to more conical shape
Facets:
Source sentences:
text: Keratoconus is a degenerative disorder of the eye where the cornea gradually thins and changes to a more conical shape.
text: Keratoconus, a degenerative disorder of the eye where the cornea gradually thins and changes to a more conical shape, can also cause astigmatism.