For me, the problem is I wear glasses and I have no interest in switching to contact lenses. I’ve never found a car headset that worked with glasses well
Custom lenses, appropriate fitting for every major headset. The inserts don't seem to limit the field of view at all, and they even serve as an extra layer of protection against scratching the headset's particularly delicate lenses.
I've gotten rid of my unit, but back when I had it, custom lenses were the best thing I did for comfort. I can't wear glasses close to my eyes, and was just generally miserable with the glasses squished in an already small space. The custom lenses solved all of that.