I love reading this kind of thing. That's fascinating, and that last bit is really wholesome. How does glasses play a part in this?
I can't visualise things in my head, and my memory doesn't have any visual aspect to it at all. For the longest time I didn't realise that when people said to "picture this" or "picture that", they literally meant to conjure up that image in their head. My mother used to spend long amounts of time describing changes she'd like to make to the garden, structures she'd like to build etc. and I just could never follow her descriptions.
Nowadays I mostly notice that when trying to compare things. Unless something is really familiar to me, I cannot really pinpoint changes to it unless I've a kind of before/after right in front of me.
Sometimes it saddens me a little. I've a dear friend who lives quite far away and we don't get to see one another often. I'm very fond of them, but I don't remember what they look like at all, beyond general, vague descriptions.