Assertion: prescribed prism | /r/HasProperty | obtained under certain circumstances
Facets:
value: by decentering the lenses
type: MANNER
value: without grinding prism
type: OTHER
Source sentences:
text: The primary use of Prentice's rule is that under certain circumstances, the prescribed prism can be obtained without grinding prism into the lenses, by decentering the lenses as worn by the patient.