Assertion: astigmatism's cornea | /r/CapableOf | develop flat or steep areas
Facets:
value: of having different curvatures
type: OTHER
value: sometimes
type: TEMPORAL
value: on the surface
type: LOCATION
Source sentences:
text: Sometimes, instead of having different curvatures, either the cornea or the lens may develop flat or steep areas on the surface and this causes the person to experience impaired vision or astigmatism.