Assertion: astigmatism | /r/HasProperty | characterized by a dependence of the angle
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Astigmatism is often characterized by a dependence of the angle between the chief ray and the optical axis of the lens system, referred to as the field angle (ε).
text: Astigmatism is often characterized by a dependence of the angle between the chief ray and the optical axis of the lens system, referred to as the field angle (ε).