Here's the old set of glasses that I've been wearing well past their expiration date.
And here are the new glasses. These are the ones with different focal lengths at different spots along the lens; not true "bifocals" (my optometrist says I don't need them yet), but a kind of vari-focal. It takes a little getting used to. I understand that people with motion sickness should not use them.
You could easily be forgiven if you said I was playing a joke and had just taken two photos in a row with the same glasses. I deliberately selected as similar a style for the new glasses as the old ones as I could find. I don't like changing styles, and I like relatively large lenses, even though it means they are special orders that take longer to fill.