Removing an AR coating is purely a surface treatment, and nothing penetrates into the lens material, not even as much as tinting a lens. Furthermore there are also neutralizers available to get rid of any acid leftovers.
The key word there is MOST. For example, some labs are able to surface 1.60 or 1.67 index materials to 1.0mm center thickness, by applying a cushion coat. Otherwise, those materials typically require 1.5mm center thickness to pass dropball. Strip a 1.0mm CT lens, and you may have rendered it weaker. Unless you have explicitly tested, you really don't know.Aside from glass, most other lenses will be more impact resistant upon removal of AR, faulty or not.
Note that the US FDA Q&A uses the word "must" with regard to who must test. Not "should", nor does it suggest an exemption for "most" lenses. You can interpret your own potential liability in the rare instance of a product liability case. Generally speaking, the last person to do something to the surface of the lens may be considered the manufacturer per the FDA Q&A. Certainly if you apply a coating, you are considered the manufacturer. It is less clear that removing a coating might also make you the manufacturer. As far as boiling a lens to repair a scratch per the original post...I wouldn't even care to speculate.
Last edited by hcjilson; 01-21-2012 at 05:26 PM. Reason: addendumb
No need to apologize, you initiated a good debate. I always enjoy when people show thab they are greedy and just want to push for new sales when they are not needed,,,,,,,,,,,,,,,,,,,,,,,,,,,why are the on-liners florishing ? That is one reason why. Not help the consumer who is in a bad spot. sell sell sell sell...........................and then complain that the onliners are getting ahead.
Harry you should know that tese threads always take a turn to some thing else than when they originate. I am tired now and go and watch TV and fall asleep so I can be back early to bug you all.
Leo Hadley Jr.Sales and Marketing ManagerVision Systems Inc.local: 727-934-0130toll free: 866-934-1030
This was a non-AR, scratch coated CR-39 lens.
Wesley S. Scott, MBA, OO, LDO, ABOM, NCLE-AC
What's your name Wes Copperfield?????
Just a "funny"... I once had a man come in with destroyed a/r coated high-index lenses that he "thought" were top-rack dishwasher safe!
Is that your porn name??
Just because you can do something doesn't always mean you should do something.
Beer is proof that God loves us and wants us to be happy ~Benjamin Franklin
I just looked at my stock lens price list..........this is not worth the effort.
Anybody use this product before? Can it be used to fix scratches??
Amcon Scratch CoatAMCON SCRATCH COAT SOLUTION is a ready to use product designed to provide a scratch resistant coating to CR39 type lenses without the need for baking. This fast acting formula can treat up to 200 pairs of lenses.
Paul @ Silicon Valley California
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