Standard Single Vision Prescription
This is the most common format
with clearly printed fields for OD, OS, SPH, CYL, AXIS and PD, Sphere (SPH) and Cylinder (CYL) always have a (+) or (-) sign.
PD can be written in different ways:
e.g. 63(Single PD), 32/31 (Dual PD), or 63/60 (Distance PD/Near PD).