Originally Posted by Amanda

I've not tried the taco shell test, and if there's an inversion mark on Focus Daily, I'm blowed if I can see it!

I also can't see any in the bowl shape of the lens on the end of my finger, whether its inside out or not.

What I've found is that the lens is virtually always the right way round in the packet. Here's what I mean:

Most times, the lens is concave side up in the packet, and that upward concave side is the side that sits against your eye.

Occasionally, the lens has got flipped pancake-fashion inside the pack, so that it's concave-side down. But it will almost never have turned inside out.

So for me, I fit the lens to my eye whichever way it comes out of the pack, turning it over if necessary, but not turning it inside-out, or outside-in.

On those very rare occasions when it may have turned itself inside-out, I can tell within a few minutes of putting it in that something ain't right, and fix it.

Now, putting the right eye's lens in the left eye and vice versa... that's a whole different kind of wrong!