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14-01-2020
Mathematics

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Your client’s PD is 62. The frame eyesize is 48, and the DBL is 18. When you block this lens, how much will the decentration per lens be?

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15-01-2020

Answer:

2 mm

Step-by-step explanation:

Remember that the formula is: (DBC-PD) ÷ 2

and

DBC = DBL + frame eye size.

The correct answer is: 2 mm

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