Question

When using a prewritten prescription, the working distance will normally never exceed the ________ of the power of the near addition. For example, a +2.00 diopter near addition will indicate a working distance no further than 50 cm. (1/2.00= 0.50 m= 50 cm)

Answer 1

When using a prewritten prescription, the working distance will normally never exceed the reciprocal of the power of the near addition.

Step-by-step explanation:

When using a prewritten prescription, the working distance will normally never exceed the reciprocal of the power of the near addition. For example, a +2.00 diopter near addition will indicate a working distance no further than 50 cm. (1/2.00= 0.50 m= 50 cm)