My Mother loves them!
I bought these for my mother, for night walking and driving, as she finds the LED headlamps of oncoming cars extremely irritating to her eyes, and complains that they dazzle her so much she can't see the road properly. She loves them for this purpose, as they reduce the glare enough for her not to constantly scream about her eyes. I weighed up the safety of the use of tinted lenses at night vs the safety of being constantly dazzled (and angry about it) while driving, and decided it was worth a try. Especially as she is often a passenger anyway, not responsible for the driving but still affected by oncoming headlamps.
She also uses them for sewing, as she works under a bright LED lamp and finds that the glasses help her eyes to feel relaxed, so she's less tired after an afternoon of quilting. Of course, she takes them off to choose colours!