Assertion: astigmatism | /r/CapableOf | represent the departure
Facets:
value: with respect to the petzval surface
type: OTHER
Source sentences:
text: Astigmatism represents the departure between the tangential and sagittal field curves (Figure 3(a)) with respect to the Petzval surface.
text: Astigmatism represents the departure between the tangential and sagittal field curves (Figure 3(a)) with respect to the Petzval surface.