Safety Glasses (Thickness)

**Excel-Lentes** · 06-09-2006, 08:04 AM

Just got in a pair of On Guard Safety glasses Z-87-2. The polycarb bifocals:
-.75 OD
Plano OS

Both lenses are surfaced to a 1.9 CT. I am debating to send them back. According to the Titmus website it says they should not be less than 2mm CT.
The lab did monogram the lenses with the + symbol on it.

Would like to hear some input what you folks would do.

Thanks.

PS; quick input is requested; my delivery pick up is in 2hrs.;)

**optical24/7** · 06-09-2006, 09:01 AM

NEW ANSI Z87.1-2003

Lens thickness requirements for goggle lenses, faceshield windows and welding filters are unchanged. Basic impact lenses in these product categories must be at least 3.0 mm thick.

The most significant change relates to spectacle lenses. High impact plano spectacles that are tested as complete products have no minimum thickness requirement. Basic impact spectacle lenses must be at least 3 mm thick. High impact lenses that will be installed in prescription frames must be no thinner than 2.0 mm.

http://www.tasco-safety.com/sglasses/ansi.html

hope this helps

**impact500** · 06-09-2006, 09:03 AM

1.9 would not be in compliance with Z87.1 2003.

It should be noted that the lab is likely the issue, not On Guard. I do not think On Guard has a lab but is only the frame supplier.

**Excel-Lentes** · 06-09-2006, 09:52 AM

Thanks for your input. Yeah the lab I use has a safety package program with on-guard frames. I already sent it back. I didn't want to be overly picky but I don't want to put somebody at risk either. I would've preferred the lab to err on the side of too thick than to thin in this case.

-Thanks again

**GOS_Queen** · 06-09-2006, 10:04 AM

Have you checked the calibration of your callipers? Whenever I'd be in doubt, I'd always check that first. Just a thought ...

**Excel-Lentes** · 06-09-2006, 11:32 AM

Yes, I did check the calipers. That was my first instinct; especially since we're dealing with .1mm. :D Thanks.

**Jim Stone** · 06-09-2006, 04:39 PM

Originally Posted by Excel-Lentes

Yes, I did check the calipers. That was my first instinct; especially since we're dealing with .1mm. :D Thanks.

I have been know to push ansi at times. This is one place you should NEVER compromise. Safety lenses MUST be the minimum thickness required.

**Karenrp1956** · 06-09-2006, 05:14 PM

Just wondering...anyone sell the rimless safety glasses? They just seem anti-safety

**Framebender** · 06-09-2006, 05:30 PM

Out here in the boonies we aren't very up to date, but I didn't know they made rimless safety. You're right, it doesn't seem very safe to me either.

**Jim Stone** · 06-09-2006, 05:38 PM

Originally Posted by Framebender

Out here in the boonies we aren't very up to date, but I didn't know they made rimless safety. You're right, it doesn't seem very safe to me either.

I've seen rimless groove safety frames. The ones I've seen have a metal band that fits into a groove. ANY groove type frame that has metal that fits into a groov on the lens IS PURE CRAP. Problems for the patient. Chip Chip Chip. Even if you get them delivered, the patients have chip problems. Don't buy it. If you find you have bought one inatvertently return it promply!

**Framebender** · 06-09-2006, 05:51 PM

Thanks for the heads up! I appreciate it!!

**Johns** · 06-09-2006, 09:42 PM

We've done quite a few of the rimless. We are the only ones in this part of the state carying them, and they are extemely popular. Having said that, I realize that "popular" doesn't go over very well when you're defending yourself against a safety eyewear lawsuit. I called Colts Lab when they first came out, and they tested them and put them through the same tests as all the other ANSI tested frames. I've looked at them closely and think that they might even be safer that standard safety frames in that it is much more difficult to remove the lens from the frame. On a standard ANSI frame, if you there is a loose screw ,(anyone ever have THAT happen??) the eyewire loosens and little or no impact can cause the lens to come out.

I have no problem selling these, and sleep very well at night.

**Karenrp1956** · 06-10-2006, 08:07 AM

Well. we will not sell them. Tell people that if that is what they want they have to go elsewhere

**GOS_Queen** · 06-10-2006, 10:47 AM

Originally Posted by Jim Stone

I have been know to push ansi at times. This is one place you should NEVER compromise. Safety lenses MUST be the minimum thickness required.

I agree ~

**wbvci** · 06-23-2011, 09:21 AM

Does anyone know why high impact requirements are thinner than basic impact? I guess to me it seems it should be the other way around, but I'm sure there's something to the logic why it is the way it is.

**DragonLensmanWV** · 06-23-2011, 10:10 AM

A high impact lens like poly or Trivex is so much stronger than CR-39 that they can be made thinner and still be even stronger than a 3.0 mm CR-39 lens.