Try some Cocoon Low Vision range (if you can find locally).
They are not totally black, but they look like regular sunglasses - and they technically qualify as medical glasses so noone can complain when you wear a dark pair of them indoors.
Another brand I like is NoIR - if you are in Us, check maxiaids.com or eg carroll.org for some different models. In UK RNIB store has plenty of good variables.

I use different lenses to regulate my sight and circadian rhythms. So home ad anywhere during day: strong yellow, blueblockers. At night: dark glasses (and sticking around). At least for now.

I have a few others I use regularly. A pair from a Japanese store, and a pair of fishing glasses - and always an eye for some new ones. A huge thing in the design is it has to cover everything, a wraparound and not just a Rayban style.

I still benefit from having a pretty substantial prescription lens. I'm also super sensitive to light so if I forget my shades I'm usually in a lot of discomfort outside. I went to my optical shop and had them make me some custom lenses in my prescription. They were fit for my RayBan Aviator frames which I really like. Because I also can't see at all in low light they gave me a lens color that does a really good job of filtering out light that hurts my eyes while leaving enough that I can use some of my vision while I'm wearing them. I wear them in light and dark, I can't really use streetlights either way and having that glare gone is nice. I rely on my cane to get me safely from place to place either way. I think the aviators work well with more formal stuff as well as when I'm just dressing casually to hang out with friends. The lenses (and frames for that matter) weren't cheap so I wanted to get something that would work in multiple settings. Overall I'm pretty happy with that route. Really if you go to your optical shop and explain the situation they will probably be able to work with you to find something that works well.