Yeah, these Apocalypse style sideblinders are pretty giant and weird.
Looks like just one big piece of plastic that snaps into place.
Honestly I can live without them. At least he Juliet/Penny style sideblinders looked cool. These definitely look awkward and almost medical, which I'm sure was a very conscious design choice for the character. Cyclops feels awkward about his power in this movie and his big clunky sunglasses express that well.