Kid glasses are usually pretty horrific because kids are kids and parents don’t want to see pretty designer frames get destroyed on the playground. I looked like Andy Samberg during his Lonely Island days with my glasses when I was younger. Now I have cute ones that actually flatter my face and make my eyes look bigger.
Braces on the other hand can be weird. They were my personal hell when I was younger for a lot of reasons, and a vast majority of the kids at my school with braces had trouble with dental care in general and thus didn’t really brush or take care of their teeth. I knew a lot of kids who did Invisalign and other less obvious teeth straightening because it was easier to brush with retainers than wires.