Assertion: astigmatism | /r/Synonym | negative
Facets:
value: toward the lens
type: TRANSITIVE-OBJECT
Source sentences:
text: If both the tangential and sagittal images are positioned to the left of the Petzval surface (Figure 3(a)), the astigmatism is called negative, undercorrected, or inward-curving (toward the lens).
text: If both the tangential and sagittal images are positioned to the left of the Petzval surface (Figure 3(a)), the astigmatism is called negative, undercorrected, or inward-curving (toward the lens).