Prescription AnalysisPregunta 35 de 100
Per ANSI Z80.1 tolerances, verifying a finished single-vision lens checks that the measured power falls within what?
a.An allowed tolerance range of the prescribed power
b.Exactly the prescribed power with zero deviation
c.Half the prescribed power
d.Twice the prescribed power
Explicación
ANSI Z80.1 defines acceptable tolerances for sphere, cylinder, axis, add, and prism. A lens passes if its measured values fall within the standard's allowed range, not necessarily an exact match.
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