1.OD-RIGHT = Right Eye OS-Left = Left Eye
2.Sphere (SPH)=Spherical, is the strength of our prescription,
"+"refers to farsightedness and presbyopia, "-"refers to
nearsightedness. If "PL" or "Plano" is stated at the place of
SPH on your prescription, please enter 0.00 for this option.
3.Cylinder (CYL) = Cylindrical, is the diopters degree of the
astigmatism. This number also has "+" or "-" signs. If "DS"or
"SPH" or "spherical" or "PL" is stated at the place of CYL, it
means you have no astigmatism and 0.00 is the option
required to choose.
4.AXIS, is a number between 0 and 180 degrees, and means
the orientation of your astigmatism. There is no sign before
5.PD-PUPILLARY DISTANCE = Pupillary Distance