Strabismus & Ocular Motility
Prism Diopter & Degree Converter
Convert between angle of deviation in degrees and prism diopters.
Degrees → Prism Diopters
PD = 100 × tan(θ)
°
Prism Diopters
—Δ
Prism Diopters → Degrees
θ = atan(PD / 100)
Δ
Angle of Deviation
—°