It's a partial ban of smart glasses, so presumably either the left lens or the right lens will be banned. That leaves a monocle, so it will definitely be OK.
Brilliant Labs was selling one for quite a while, but it looks like it was discontinued in favor of their new, more standard device https://docs.brilliant.xyz/monocle/monocle/
I would not recommend. Whenever a rambunctious youth acts against my well-founded advice, mine pops off and I must replace it quickly lest I miss any moment of the cricket match.