• Over USD $59.00,Free Shipping
  • Buy1, get other frames 50% Off
Sign Now & Get

$4 OFF

Coupon Code for Your Registration!

Thanks for being our unique one!

CODE: v04

Something You Must to Know About PD

Oct 31 ,2018 Writen By: admin admin

The pupillary distance refers to the distance between the center of the pupils when the two eyes face the front and the line of sight is parallel. Generally expressed in English letters "PD", the unit is mm.



Classification of pupil distance


Binocular PD and monocular PD



Binocular PD: The distance between the center of the right eye pupil and the center of the left eye pupil. This type of measurement will be between 41-80 mm


Monocular PD: The distance from the center of the right (left) eye pupil to the midline of the nasal bridge (applies to monocular, squint, and gradient mirror fitting). This type of measurement will be between 20-40 mm



Far PD/Distance PD and Near PD


Far PD/Distance PD: The distance between the centers of the pupils of the two eyes when the eyes are looking into the infinity.


Near PD: The distance between the pupil centers when 30~40cm reading in front of eyes or working at close quarters.


Sometimes PD will be written as PD = 33/34.5, which means the distances between the nose and the center of the two pupils. In this case, PD = 33 + 34.5 = 67.5, so you can fill in 67 or 68. The only 1 mm or 2 mm will have no effect at all.

Sometimes there is Far PD/Distance PD or Near PD. If you are shortsighted, please fill in Far PD/Distance PD. If you need reader, please fill in Near PD.





  • The average PD is 60-66 mm, and about 97% of people have a PD of 54-74 mm. So if you measure a PD value outside 54-74 mm, you may have made a measurement error.


  • In most cases, the female standard pupil distance is 52-65 mm, and the male standard pupil distance is 58-71 mm.


  • When the pupil distance is not integer (for example, 58.5), myopia please choose 59; hyperopia / presbyopia please choose 58.


Wanna see the video of how to measure your PD? Click me!


Last Update 2019-05-07 13:55:49
Read 60424 Times
Published In TIPS
Tags : Tips,

Leave a comment



  • Comment Link 2019-04-25 03:07:12 Posted By DarrellFrede

    I have found loads of helpful information on your website this page in particular. Thanks for sharing. [url]admissionessayservices.xyz[/url]

  • Comment Link 2019-04-29 03:25:07 Posted By Ramon Avara

    how to choose yourself best glass stair railings in your apartment

  • Comment Link 2019-05-07 17:45:05 Posted By JamesLoary

    Срочно продам заготовки RW15 по 38руб. (900шт.) брелки MIFARE 1K (Бесконтактный RFID брелок с чипом Mifare S50) по 9руб. (7000шт.) 8 917 715 99 60. Отправлю почтой или СДЭКом за свой счет,заготовки оплатите после проверки при получении.

1 to 3 of 63 Item(s)

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
Make sure you enter the (*) required information where indicated. HTML code is not allowed.