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Glasses Rx online problem...

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Muse

Lifer
Jul 11, 2001
40,884
10,224
136
I'm working up an order for a pair of reading glasses (Rx) at bestpriceglasses.com and put in my Rx but it wants me to put in info for PD. I don't see that on my Rx. What is PD? :confused:
 

Crono

Lifer
Aug 8, 2001
23,720
1,502
136
Pupillary distance, measurement from one pupil to the other. You can use a ruler for this, just measure carefully or get it from opthamologist if you aren't too sure. It's not always a standard measurement for your Rx, but you can request it.

I recommend Zenni Optical for online order, btw, if that's an option for you.
 

Muse

Lifer
Jul 11, 2001
40,884
10,224
136
Originally posted by: Crono
Pupillary distance, measurement from one pupil to the other. You can use a ruler for this, just measure carefully or get it from opthamologist if you aren't too sure. It's not always a standard measurement for your Rx, but you can request it.

I recommend Zenni Optical for online order, btw, if that's an option for you.

Thanks. I just emailed the specialist at Kaiser who examined me and gave me the Rx asking her for the PD. I hope she took it. I can more easily measure the distance between the centers of the lenses of my current glasses (I have many pairs) than my actual eyes. I figure that figure should be the same. I don't want to have to visit a specialist to get this.

Would Zenni optical be better? I want cheap. Obviously he Rx shouldn't be an issue. As long as they are comfortable and don't break I don't give a damn about the rest. Oh, I'd prefer glass, but it looks like that might be hard to come by. Hate those scratch-prone plastic lenses.
 

Crono

Lifer
Aug 8, 2001
23,720
1,502
136
Originally posted by: Muse
Originally posted by: Crono
Pupillary distance, measurement from one pupil to the other. You can use a ruler for this, just measure carefully or get it from opthamologist if you aren't too sure. It's not always a standard measurement for your Rx, but you can request it.

I recommend Zenni Optical for online order, btw, if that's an option for you.

Thanks. I just emailed the specialist at Kaiser who examined me and gave me the Rx asking her for the PD. I hope she took it. I can more easily measure the distance between the centers of the lenses of my current glasses (I have many pairs) than my actual eyes. I figure that figure should be the same. I don't want to have to visit a specialist to get this.

Would Zenni optical be better? I want cheap. Obviously he Rx shouldn't be an issue. As long as they are comfortable and don't break I don't give a damn about the rest. Oh, I'd prefer glass, but it looks like that might be hard to come by. Hate those scratch-prone plastic lenses.

Zenni is very good from experience (ordered twice from them, perfectly satisfied) and cheap. You're right, glass is hard to come by. Most places go for polycarbonate (plastic), which is thinner but definitely more scratch prone.
 

Muse

Lifer
Jul 11, 2001
40,884
10,224
136
Looking over my collection of past Rx's, I see a PD listing on one. However, it's not one measurement. It says: 67/64. What could that mean? Split the diference? Is that the distance between the inner edges vs. outer edges of the pupils? :confused:

Doing myself in the mirror with a ruler I'd guesstimate 65ish.
 

vshah

Lifer
Sep 20, 2003
19,003
24
81
Originally posted by: Muse
Looking over my collection of past Rx's, I see a PD listing on one. However, it's not one measurement. It says: 67/64. What could that mean? Split the diference? Is that the distance between the inner edges vs. outer edges of the pupils? :confused:

Doing myself in the mirror with a ruler I'd guesstimate 65ish.

maybe when they're dilated/not dilated?
 

MattCo

Platinum Member
Jan 29, 2001
2,198
2
81
Originally posted by: Muse
Looking over my collection of past Rx's, I see a PD listing on one. However, it's not one measurement. It says: 67/64. What could that mean? Split the diference? Is that the distance between the inner edges vs. outer edges of the pupils? :confused:

Doing myself in the mirror with a ruler I'd guesstimate 65ish.

Actually, it is far distance/near distance PDs. Use the Far distance one (67). When you look at an object that is a short distance away, your PD contracts about 3 mm.

http://www.stingyspecs.com.au/what-is-PD.html
 

troytime

Golden Member
Jan 3, 2006
1,996
1
0
put on a pair of glasses
have a friend mark the lenses with a dry erase marker - put a dot where your pupils are.
measure.
 

Crono

Lifer
Aug 8, 2001
23,720
1,502
136
Originally posted by: troytime
put on a pair of glasses
have a friend mark the lenses with a dry erase marker - put a dot where your pupils are.
measure.

That should work well enough. Just make sure your friend isn't a dolt or legally blind :p
 

Muse

Lifer
Jul 11, 2001
40,884
10,224
136
My specialist at Kaiser who examined me a couple of months ago evidently didn't measure PD. So, I call a store where I did order glasses and was told I'm 66mm. I asked her a question: I'm ordering glasses online for reading. She said if it's reading glasses, tell them 63mm. So I guess that's what I'll enter.
 

nakedfrog

No Lifer
Apr 3, 2001
62,838
19,057
136
Originally posted by: Crono
Zenni is very good from experience (ordered twice from them, perfectly satisfied) and cheap. You're right, glass is hard to come by. Most places go for polycarbonate (plastic), which is thinner but definitely more scratch prone.

I think I'm on my fourth or fifth Zenni order now, and I've been satisfied. At least ten pairs of glasses altogether.
 
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