Reading your RX

TERMS YOU MAY SEE

ADD	The magnifying power applied to the reading part of bifocals or progressive lenses.
DV and NV	DV= Distance Vision NV=Near Vision Indicates whether correction is needed for distance vision or near vision
CYL	CYLINDER power. The level of astigmatism. It will be indicated together with either a minus (-) sign or plus (+) sign.
DVO	Distance-vision-only.
SPH	SPHERE: The overall power needed to correct near-or-far-sightedness.
NV	Near-vision prescription for up-close vision.
NVO	Near-vision-only. A prescription for reading-only glasses.
AXIS	Describes where the cylinder should be placed on the lenses to fix astigmatism.

OD	Right eye
OS	Left eye
OU	Both eyes
PD	Pupillary Distance: The distance between your right pupil and your left pupil in millimeters (mm). If the PD number is missing from your prescription, find out how to measure it here
PL	Plano. This is a placeholder for the number zero.
PLANO	A placeholder for the number zero.
PRISM	AUsed to correct double-vision or help with certain special types of eyestrain

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