So the glasses makes reading for the head while pleasant, but not for the eyes. The angle is not steep enough and you have the head always still tilt a bit. The glasses are also very heavy and therefore uncomfortable to wear. The distance between the lenses is also a little big, thus always results in a black bar on the book, which interferes with reading. Then you have to hold the book a bit further away, which is unpleasant to the eyes again. They already served its purpose, but is not far from perfect. It is not only lying, but sitting at the desk used, I personally get after some time getting neck pain when I am long desks read or write, so the glasses are better than nothing.