Assertion: astigmatism | /r/HasProperty | term
Facets:
Source sentences:
text: Astigmatism is a term used for the irregular shape of the surface of the eye called the cornea.
text: Astigmatism is a term that is commonly used in the eye care industry, but many patients don’t understand what it means.
text: Astigmatism is a term that refers to an imperfection in the shape of the cornea.