Discussion in 'Optometry' started by nobodyknows, 08.10.04.
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How do you take PD and seg. height measurements?
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)
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
ideally, you want a seg. height of 15 or more for bifocal right?
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.
PD and Seg height depends on what type of lenses. or go to smartpdmeter.com and see the picture
I'm going to guess that this person has their PD figured out by now.. six years later...
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Haha. I hadn't noticed the date at first. I was like "SCCO 2009, huh?"
I was just about to say, "don't they teach you this at SCCO?"
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