Stacked Prism Value Lookup

Combined prism power when two prisms are stacked in the same direction over one eye.

Combined Prism Power

Initial Prism + Stacked Prism

Choose the initial prism and the prism stacked on top of it, both held in the same direction over one eye.

Initial Prism (prism diopters)

10 12 14 16 18 20 25 30 35 40 45 50

Prism Stacked On Top (prism diopters)

1 2 3 4 5 6 7 8 9 10 12 14 16 18 20 25 30 35 40 45 50

Resultant Prism Power
—Δ

For clinical reference only.