I had really good eyesight for a long time. It wasn’t until I noticed that I couldn’t keep my eyes open while driving at night that I solicited any extra professional opinions, whereupon it turned out that I had a mild astigmatism. So I started to wear glasses in my 30s and was basically rushed through the whole process. “Which of these two [lenses] is better? Great, here’s your choice of frames, they’ll be ready in two weeks.”