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Last edited by tdj; 03-14-2011 at 06:13 PM. Reason: privacy
1.6 should be fine. You will probably not see a thickness difference between the 1.67 and 1.74
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Last edited by tdj; 03-14-2011 at 06:14 PM. Reason: privacy
Your Rx is not high enough to warrant that high of an index. Keep in mind the abbe value difference between 1.60, 1.67 & 1.74
Depending on the type of frame you're using, the 1.60 might be your best choice. I don't use 1.74 unless the Px's RX is over 5.50D or it's a poor choice of frame like a wide rectangular frame that requires decentration of more than about 4mm.
I did check out how much LC is charging for that lens. WOW!
and also their DriveWear = $800.... for SV!!!! sans AR!!!
p.s. You should be able to use your associate discount on frames only. just make sure you make it clear to your manager that it's for you. and you're buying lenses from your dad, not having a buddy in the lab make one for you on the DL.
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Last edited by tdj; 03-14-2011 at 06:14 PM.
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Last edited by tdj; 03-14-2011 at 06:14 PM.
There is a calculator here www.opticampus.com where you can put in the frame information, PD, prescription, and lens material and see how much difference the 1.74 high index makes.
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Last edited by tdj; 03-14-2011 at 06:15 PM.
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Last edited by tdj; 03-14-2011 at 06:15 PM.
As far as I am aware we do not have access to 1.74 at LC, additionally we do not sell the DriveWear lens, nor do I think LC could get away for charging $800 for a Sv lens. (Well not yet anway ;-)Originally Posted by OpticianVlad
Care to share where you are getting this information from?
Don't forget that the 1.67 and the 1.74 have the same ABBE value as Poly, so if you're sensitive to the color fringes, avoid either one and go with the 1.60.
ABBE:
1.74=32
1.67=32 (one new one has 33)
Poly=32
1.60=42
DragonlensmanWV N.A.O.L.
"There is nothing patriotic about hating your government or pretending you can hate your government but love your country."
how many of you guys actually run into trouble with abbe?
I pick up what you are dropping!Don't forget that the 1.67 and the 1.74 have the same ABBE value as Poly, so if you're sensitive to the color fringes, avoid either one and go with the 1.60.
ABBE:
1.74=32
1.67=32 (one new one has 33)
Poly=32
1.60=42
1.60 is the way to GO!!
:cheers::cheers::cheers::cheers:
The Man, The Myth, The Legend,
Fezz
Rising from the ashes like the great Phoenix
Who cares how time advances?
I am drinking ALE today
-Edgar Allen Poe-
According to many on this board, "It's never overkill if it's the latest, greatest, most high tech and the profits on it are higher than something simpler. You deserve the best, no matter whether it's better for you or not!
Chip
"The trouble with America is Them! A. Bunker
Me.
DragonlensmanWV N.A.O.L.
"There is nothing patriotic about hating your government or pretending you can hate your government but love your country."
Me, numerous times
Chip
"The trouble with America is Them! A. Bunker
very odd. I have been wearing poly or high index most of my life and have never had a coloration problem. Neither have my patients.
You are very lucky!
The Man, The Myth, The Legend,
Fezz
Rising from the ashes like the great Phoenix
Who cares how time advances?
I am drinking ALE today
-Edgar Allen Poe-
Just cause you ain't got it don't mean normal people don't experience it.
Shoot lots of patient's can get used to anything. Doesn't mean thier ability to adapt, indicates what they adapted to was a good thing.
I personally switch between Pals, trifocals, and bifocals, occasional SV and magnifiers. Doesn't bother me more than two seconds. But we all see patients that can't stand any of the above much less switching with instant adaption.
Chip
"The trouble with America is Them! A. Bunker
Sometimes you don't know you're experiencing it until it stops.:D
"Hey! Why are you banging your head against the wall?"
"Cause it feels good when I stop!"
DragonlensmanWV N.A.O.L.
"There is nothing patriotic about hating your government or pretending you can hate your government but love your country."
Don't quite know what you mean by a 'colouration' problem.
I first saw 'chromatic abbertation' on a high-index lens by using the lenses during driving, and glancing up ionto my rear-view mirror.
It wasn't that bad, just a tinge of slight rainbow colour that disappeared as soon as I changed my head position. No big deal.:D
Right, but it is a big deal to some people. I see it with poly but not with my 1.67 lenses. Why? I do not know since I have just read that they have the same abbe value. Did I find it annoying? Yes. If you wear your glasses all the time why would you want that? I have a few (a very few) patients who are sensitive to it. If I know ahead of time I obviously choose another material. I have had one person in the last year come back and say "I see rainbows and it's driving me nuts". Ok, let's put you in another material right away. It's a random thing.
You deserve the best.....................
..................the best is thinner by a couple of mm, but the vision is not so good................but the price is worth making an effort to sell it.
Chris Ryser
________________________________________
DLO. NA.IC.I.T.PO
http://optochemicals.com............................. http://arcoatings.com
I use a handheld SV lens when photographing some macros. I have both CR39 and poly +4.00D lenses. I get distinct color separation on poly but not on CR39. On a white floral, there will be very bold yellow and blue edges. Additionally, when light (sunlight) hits obliquely, the image through poly pretty much turns to mud unless I narrow the aperture.
It's not eyewear so why is this pertinent?
ABBE matters.
Your "Ultra high index super premium kick butt bulletproof AR" lenses all have one thing in common - they are trying to achieve as close to the optical clarity of the lower indexes of both CR39 and glass while providing the added weight and vanity bonus of thinner and thinner profiles. Remember, though - it's the optical industry AND we're dealing with the public. Were it all about precision optics, you wouldn't have consumers flocking to Clark Howard for advice on eyewear.
In short, ABBE matters, but it's mostly opticians who care.
LC in the new york city market is carrying drivewear.
Call one of their stores.
I still have friends that work there and they called me to tell me about it.
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