So we can't trust the store to give us the glasses we ordered, we need to test them. To get a control to test against, we're then going to...trust the store and have them provide the control?
How do you know those glasses on the counter touting 8 layers actually has those 8 layers?
It kind of sounds like all you can really do is see if the glasses have the features you requested. Do they transition? Does it seem like they transition as much as you were wanting? Do they seem like they don't have bad glare? Does it attenuate the glare as much as you were wanting? If not, then return them. This is entirely possible with online glasses retailers, they usually have decently generous return policies.
People don't buy glasses because they have 8 layers instead of 7. They buy them because those layers give additional features and it's the features they want. If they can do the features you want in 7 layers instead of 8, does it really matter if it's only 7 layers?
Well that’s why I mentioned in-store testing would likely only be useful for low end lenses.
For mid range to high end lenses it would probably be impossible to confirm the actual layer count without destructive testing.
Of course it would be reputation and gut-feel-perception based for most buyers in any case.
However, for the higher end stuff, gut-feel-perception probably wouldn’t be able to tell the difference. Human eyes can’t perceive the strength of lamination between layers, for example.
So it would be entirely reputation based at the higher end.
Which probably explains why high end glasses are vastly more expensive then Warby Parker and other discount places…
What a weird argument. Obviously a company can go n-layers deep when it comes to misdirection, but I'd say going to a store to physically inspect what you're getting is a much better option than blindly trusting everything they tell you.
In a store you can compare things side by side. If you order something, you get what you get and have no frame of reference.
How do you know those glasses on the counter touting 8 layers actually has those 8 layers?
It kind of sounds like all you can really do is see if the glasses have the features you requested. Do they transition? Does it seem like they transition as much as you were wanting? Do they seem like they don't have bad glare? Does it attenuate the glare as much as you were wanting? If not, then return them. This is entirely possible with online glasses retailers, they usually have decently generous return policies.
People don't buy glasses because they have 8 layers instead of 7. They buy them because those layers give additional features and it's the features they want. If they can do the features you want in 7 layers instead of 8, does it really matter if it's only 7 layers?