measuring PD and seg. height

Discussion in 'Optometry' started by nobodyknows, Aug 10, 2004.

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  1. nobodyknows

    nobodyknows Member 5+ Year Member

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    How do you take PD and seg. height measurements?
     
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  3. cpw

    cpw It's a boy !!! Moderator Emeritus 10+ Year Member

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    PD is fairly uncomplicated but would be hard to explain without a diagram.

    Seg height depends on what type of lenses they are (Bifocals, Trifocals, Progressives, etc)
     
  4. lemonhead43

    lemonhead43 Member 10+ Year Member

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    to measure, its easy if u have a pupilometer.. but if u have a pd stick, a small ruler with mm scale, u cna measure the center or one pupil to the other.. as for seg height.. if its bifocal, measure up to the lower eye lid.. as for single vision such as near sighted or far sighted, just measure directly the center of the pupil.. progressives are the same but you have need to make sure the frame is big enough to accomadate it
     
  5. nobodyknows

    nobodyknows Member 5+ Year Member

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    ideally, you want a seg. height of 15 or more for bifocal right?
     
  6. lemonhead43

    lemonhead43 Member 10+ Year Member

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    for the most part.. 15 or so could be standard but what i found when i measure for bifocal is that it varies for different people.
     
  7. id1070

    id1070

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    PD and Seg height depends on what type of lenses. or go to smartpdmeter.com and see the picture
     
  8. JMU07

    JMU07 5+ Year Member

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    I'm going to guess that this person has their PD figured out by now.. six years later...
     
  9. fonziefonz

    fonziefonz 7+ Year Member

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    You win internet+1
     
  10. Mewcakes

    Mewcakes SCO c/o 2014 2+ Year Member

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    Haha. I hadn't noticed the date at first. I was like "SCCO 2009, huh?"
     
  11. yOyOYoo

    yOyOYoo Member 7+ Year Member

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    HAHAHA

    I was just about to say, "don't they teach you this at SCCO?"
     

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