The B measurement in the boxing system refers to:

The B measurement in the boxing system

Multiple choice — select the best answer

AThe vertical height of the lens opening
BThe horizontal width of the lens opening
CThe diagonal measurement of the lens
DThe distance between the geometric centers

✓ Correct answer: A. The vertical height of the lens opening The B measurement is the vertical height of the lens opening, measured in the boxing system from the top to the bottom of the lens shape. It is important for determining segment height in bifocal prescriptions.

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Topic: Frame Selection & Adjustment

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The B measurement in the boxing system refers to:

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