**Definition**

Prentice’s Rule is a rule that states that the decentration of a lens in centimeters times the power of the lens is equal to the prismatic effect.

The formula for Prentice’s Rule is: Δ = c*F

Optician Sustainment Training

Prentice Rule : Prentice Rule

Screen 3 of 44

Prentice’s Rule is a rule that states that the decentration of a lens in centimeters times the power of the lens is equal to the prismatic effect.

The formula for Prentice’s Rule is: Δ = c*F

Select NEXT to continue.