Vertex Calculator

high-power correction for spectacle → contact lens power
mm
correction applies per meridian when |power| ≥ 4.00D · converts spectacle Rx → contact lens power

OD · Right

oculus dexter
Sph —
Cyl —
Type Rx
sph cyl, space-separated
Sph
—
Cyl
—
SE
—
vertex-corrected
Enter a Rx above to convert.

OS · Left

oculus sinister
Sph —
Cyl —
Type Rx
sph cyl, space-separated
Sph
—
Cyl
—
SE
—
vertex-corrected
Enter a Rx above to convert.
—