Assertion: astigmatism | /r/CapableOf | cover the eye's iris
Facets:
Source sentences:
text: Astigmatism is an imperfection in the curvature of your cornea — the clear, round dome covering the eye's iris and pupil — or in the shape of the eye's lens.
text: Astigmatism is an imperfection in the curvature of your cornea — the clear, round dome covering the eye’s iris and pupil — or in the shape of the eye’s lens .