Some types of occupations and hobbies have a high requirement for both close-up and distance vision in the same time spans.
So two pairs of glasses there aren’t very practical.
In these specific cases I sometimes suggest trying out bifocals - but not progressive lenses.
After only about five years or so, finally got around to making a video explaining why:
(not sure if I’ll ever stop feeling ridiculous making videos and posting them on the Internet - definitely too old for the current generation of humans)
Pretty simple and as always goes right back to 1) minimize focal plane changes and 2) simpler is better.
And as usual I make these videos based on a comment or e-mail that specifically rings a bell that there’s a topic in neglect of clarification. So anytime you think of stuff that ought to be covered, feel free to nudge me about it.
Also as pointed out in the video, I’m not entirely 100% completely infallible (the heresy!). Most of the things here as usual, based on collected experiences rather than some sort of facial protein filament based innate genius. Always possible that some particular cases will entirely benefit from progressive lenses. Feedback and ideas and experiments always most welcome.