Assertion: astigmatism | /r/CreatedBy | refractive error
Facets:
value: in the eye’s lens
type: LOCATION
Source sentences:
text: Astigmatism is a condition caused by a refractive error affecting one or both eyes.
text: Astigmatism is a common eye condition caused by a refractive error in the eye’s lens, which can result in blurred vision.