Lenses are not uniform.  Regardless of the price, these are horrible.
I have gas station readers that more legible.  2 of the pairs seem like they have different lenses in each side as well.  Flipping them upside down moves the blurriness from one side to the other. The other 2 pairs have severe blur on the periphery. Due to the poor uniformity you get tons of motion when you move your head, 10 minutes with them on gave me an upset stomach.
Rating: 1 stars