The amount of induced prism and the direction of the prism are determined by __________ . Choose all that apply.

Question

Quizplus · Accepted Answer

The amount of induced prism and the direction of the prism are determined by both the prescription and the position of the eyes. Prentice's Rule is a formula used to determine the amount of induced prism in a lens:
P = cfwhere:
P is the amount of prism correction (in prism diopters)
c is decentration (the distance between the pupil center and the lens's optical center, in centimeters)f is lens power (in diopters)

The Amount of Induced Prism and the Direction of the Prism