Your PD is the distance between each of your pupils. This measurement is necessary to ensure the correct positioning of your lenses within the frame you have chosen.

If you don’t have this number, please visit AccuPD.com on your smartphone only and get an accurate measurement of your PD in 3 simple steps.

If you don’t have a smartphone, please visit our PD Help Section to print a ruler with instructions on how to properly measure your PD.

If you have any questions, please feel free to contact us during business hours and we will be happy to assist you.

1. O.D. or OD = right eye
2. O.S. or OS = left eye
3. O.U. or OU = both eyes
4. SPH or sph = SPHERE power; the "overall" power
5. D.S. or DS = diopters sphere (means you have sphere power only)
6. CYL or cyl = CYLINDER power; the amount of astigmatism
7. X = axis; X 90 means AXIS 090
8. ADD = how much power gets added to the distance Rx, for your reading-only Rx or for the bottom half of your bifocals/progressives
9. Pl or pl or plo = PLANO; it's a placeholder for the number zero
10. NV or NVO = near-vision or near-vision-only; your doctor is recommending "reading-only" glasses
11. P.D. or PD = pupillary distance (the distance in between your right pupil and your left pupil), in millimeters (mm)

1. -50 = -0.50
2. +100 = +1.00

OD = Right Eye

OS = Left Eye

OU = Both Eyes

	SPH	CYL	AXIS	PRISM	ADD
O.D.	-1.00	-0.25	005		+2.50
O.S.	-1.75				+2.50

	SPH	CYL	AXIS	PRISM	ADD
O.D.	-1.00	-0.25	005		+2.50
O.S.	-1.75				+2.50

empty table column		SPH	CYL	AXIS	PRISM
D I S T	O.D.	-1.00	-0.25	005
	O.S.	-1.75

empty table column		SPH	CYL	AXIS	PRISM
N E A R	O.D.	+1.50	-0.25	005
	O.S.	+0.75

Blue495 Anti-Glare Coating

Blue495 Anti-Glare Coating blocks High-Energy Visible (HEV) blue light emitted by digital devices and artificial light, which are known to have some harmful effects to the eyes and often disrupt natural sleep cycles.

This advanced coating will not only improve your vision and make your glasses look more attractive, it will also significantly reduce eyestrain, help protect the health of your retina, and increase contrast in everything that you see!

Increases visual performance of your eyeglasses. Instead of light reflecting off the lenses (and internally reflecting within the lenses), 99% or more will now pass right through.

Dramatically improves the appearance of your eyeglasses. Others won’t see the light bounce off your lenses; they’ll just see your eyes. (This is why everyone on TV who wears eyeglasses always has anti-glare coatings on them.)

Makes night-driving much easier by virtually eliminating all headlight and street light glare.

Our no-glare lens coatings are also hydrophobic. This means they repel water and moisture, reduce static build-up, and are easier to clean.

Crizal Prevencia Anti-Glare Coating

Crizal Prevencia by Essilor is the gold standard in Anti glare protection. This premium coating blocks High-Energy Visible (HEV) blue light emitted by digital devices and artificial light, which are known to have some harmful effects to the eyes and often disrupt natural sleep cycles. Crizal Prevencia also repels dust and water as well as resisting smudges.

This advanced coating will not only improve your vision and make your glasses look more attractive, it will also significantly reduce eyestrain, help protect the health of your retina, and increase contrast in everything that you see!

Increases visual performance of your eyeglasses. Instead of light reflecting off the lenses (and internally reflecting within the lenses), 99% or more will now pass right through.

Dramatically improves the appearance of your eyeglasses. Others won’t see the light bounce off your lenses; they’ll just see your eyes. (This is why everyone on TV who wears eyeglasses always has anti-glare coatings on them.)

Makes night-driving much easier by virtually eliminating all headlight and street light glare.

UltimateView™ Premium Anti-Glare Coating

Increases visual performance of your eyeglasses. Instead of light reflecting off the lenses (and internally reflecting within the lenses), 99% or more will now pass right through.

Dramatically improves the appearance of your eyeglasses. Others won’t see the light bounce off your lenses; they’ll just see your eyes. (This is why everyone on TV who wears eyeglasses always has anti-glare coatings on them.)

Makes night-driving much easier by virtually eliminating all headlight and street light glare.

Our no-glare lens coatings are also hydrophobic. This means they repel water and moisture, reduce static build-up, and are easier to clean.

If your doctor prescribed glasses for you with an ADD power, but you still just want single vision glasses, there's no need to enter them. For simplicity, we've left out the ADD power column.

Your ADD power isn't needed for single vision distance-only glasses, since that's the amount we "add" to your distance power for your up-close vision. It's understood that the ADD power gets ignored for single vision distance glasses even if you had provided it to us.

We only need your ADD power if you're ordering single vision reading-only glasses (up close vision, where it'll probably be blurry far away while wearing them), or for regular bifocals, or for progressives.