Poor Quality
I ordered a pair of these based on the reviews.  I used them a little and they seemed ok.  So, I ordered more (I tend to misplace them and am very hard on them).  When the second group of 3.0+ arrived, my wife and I noticed that several did not magnify at all. I had another pair of glasses that I wore until they fell apart.  Then, I started using these.  All of the ones that did magnify seemed not right, but I could not figure it out why. In the mean time, I found another old pair and used them.  I noticed right away how much clearer things were.  Not only magnified, but clearer.  These glasses from Amazon are at a great price.  But for me, the quality is not that good and I am no longer using them regularly.
Rating: 1 stars