The blue light part is probably nonsense for sleep (unless they are _very_ yellow), but the rest makes sense. They're essentially reading glasses to keep the sc

The blue light part is probably nonsense for sleep (unless they are _very_ yellow), but the rest makes sense. They're essentially reading glasses to keep the screen at optical infinity, with a prism that keeps the eyes converging at (real) infinity. (The prism seems particularly important for a young person, as otherwise the still-developing brain could come under the impression that sometimes it's important to cross one's eyes while looking at an object at optical infinity.) I use a custom prescription to produce a similar effect, and they are wonderful for preventing eye strain.