Assertion: astigmatism's cornea | /r/CapableOf | cover iris
Facets:
Source sentences:
text: Astigmatism is a common eye condition referring to an abnormality in the shape of the eye’s lens or in the curve of a patient’s cornea, which is the clear, round dome covering the pupil and iris.
text: The cornea is a small, round, clear dome that covers the pupil and iris.