These glasses take a very long time to transition and when they do it’s not exactly a dramatic change. Recently I have learned that the evolution of transitional lenses has came a long way over the last 10-20 years. The new reading glasses I just got, have the latest version of transitions and they adjust very quickly. I would also ad, that these glasses were like $50 after tax, so not the most expensive, but I expected better. All in all…disappointing.