- 1 Which PD number should I use?
- 2 What is a normal PD for glasses?
- 3 What does PD 62 59 mean?
- 4 Why does my PD have two numbers?
- 5 What happens if PD is wrong on glasses?
- 6 What if PD is off by 2mm?
- 7 Does PD have to be exact?
- 8 How do I find my PD on my glasses prescription?
- 9 What does PD mean for glasses?
- 10 What does PD 62 58 mean?
- 11 What does PD 63 60 mean?
- 12 How do I know if I have single PD or dual PD?
- 13 Should I use single or dual PD?
- 14 Should I use near or far PD?
- 15 Can you measure PD from old glasses?
Which PD number should I use?
Your PD is measured in millimeters and is necessary for creating your custom prescription eyeglasses. Your PD allows an optician to properly position your lenses within a frame of your choice in order for you to see. Typically, most adults have PDs between 55-65 mm. For kids, PDs are usually between 42-54 mm.
What is a normal PD for glasses?
An average PD measurement is about 62mm for women and 64mm for men. For children the measurement usually ranges from 41 to 55 mm.
What does PD 62 59 mean?
Most adults have a PD between 55-65 millimeters. If the first number is higher, like 62/59, then the first number is your Distance PD and the second is your Near PD (for reading-only glasses). If the numbers are smaller, this means you have a monocular PD; therefore, you have two separate numbers for each eye.
Why does my PD have two numbers?
Your Numbers The first number, which is always higher, is for distance, and the second number, which is always lower, is for near-vision reading only. Another example is if your numbers are 34.5/33.5, then it means your PD was taken one eye at a time.
What happens if PD is wrong on glasses?
Your Glasses If your pupil distance does not match where the centers of your pupils are, your vision can be affected– Like wearing someone else’s glasses! The wrong PD can induce eye strain, fatigue, headaches and blurry vision.
What if PD is off by 2mm?
If the PD measured was 2mm off initially, by using a millimeter rule, the net cumulative error might be 4.5mm or more.
Does PD have to be exact?
Your PD should be exact. If your lenses aren’t centered correctly, they can cause discomfort and eye strain. A small margin of error might not cause problems, but it’s better to be as accurate as possible.
How do I find my PD on my glasses prescription?
Starting with the right eye, line up the zero end of the ruler at your pupil; measure the distance from your right to your left pupil. The millimeter number that lines up with your left pupil is the measurement you want. That number is your PD.
What does PD mean for glasses?
Measure your pupillary distance (PD) PD is the distance between your pupils, and it’s used to help center a prescription correctly in your frames.
What does PD 62 58 mean?
If Your PD is two Numbers: If the numbers are two higher digits like 62/58, then the first number is your Distance (Far) PD used for making Distance glasses and the second is your Near PD used for making reading glasses. If you are ordering Bifocals you should enter both #’s.
What does PD 63 60 mean?
Most adults have a PD between 53 and 70, and children will be between 41-55. You might be given two numbers such as 63/60. This would mean that you use 63 as your PD for distance vision. The smaller number would be used only when converting the prescription to single vision reading glasses.
How do I know if I have single PD or dual PD?
A single PD would be provided by one number and is the measurement of the center of one pupil to the center of the other. A dual PD would be provided with two numbers and would appear and is the measurement of each pupil center to the center of the bridge of the nose, in millimeters.
Should I use single or dual PD?
Single PD is the total distance between the center of both pupils. We recommend measuring dual PD. This is why: Dual PD is believed to be the most accurate since many people have different distances between their nose and pupil on each eye.
Should I use near or far PD?
Your PD is usually measured for distance vision, which is ” Far PD”, or “62” in this example. For reading glasses, doctors measure your “Near PD” or “59” in the example. Always enter your “Far PD” for distance vision eyeglasses and enter your “Near PD” for your reading glasses only.
Can you measure PD from old glasses?
If all else fails, you can use your old or current glasses to measure your pupillary distance. With your glasses on, stand 8-10 inches away from a mirror. While staring straight ahead, take a non-permanent marker to mark the center of your pupils on your glasses.