I started with one pair  and have added two more, now have a pair of yellow and surprise to me they do help.  At 77 vision at night is different, however with the yellow ones they help, also on  cloudy days. Also wear them when shooting.
The regular ones I sometimes wear for hours of driving and the fact they cut down on side sun when going east or west is a big help.  I found a layer of duct tape on back part of temples makes them more secure.  I know this does not sound stylist, but it works and it is black so never noticed.
Very satisfied, but need one more pair!! Not really but may get them.