All the better to see you with, my dear

Yesterday we spent going from doctor to doctor and from one glasses place to another. Both Granddad and I ended up with new lenses and slightly sharper vision. Here is Granddad in his old frames.
Here is Granddad in his new frames.
Subtle, isn't it?

Mine? Can't tell the difference?
Same frames. Just a new and improved lens with no glare.
And I can't wipe them on my shirttail anymore.