system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] [The Boys] [Superheroes] How does heat/Laser vision work without hurting the user?

For heroes like those in the "Super" Family (Superman, supergirl, Superboy) and "heroes" like (and I use the word "heroes" loosely here) Homelander, where does the heat/laser vision come from? Is there a part in there brain/behind their eyes that produces the energy for the heat/laser? Are they channeling it from some energy dimension? (I think X-Men cyclops and Havoc is this though I'm not sure, may be confusing) And how do their eyes function/have evolved to deal with this? Are they burn resistant? Harder to squeeze or crush?

Can anyone think of a way they do it without visual harm?
gpt
Regarding Cyclops. It's not actually a laser & the only heat it will generate is from friction.

Scott Summers produces a concussive beam of force. You won't burn if he hits you, it's more like being punched by hard light (Albeit strong enough to blow away mountains).

One explanation offered is that his eyes are portals to an entire dimension of this energy. Another is that his cells absorb ambient energy & convert it into this.  Or he absorbs energy to keep the portal open.

The reason he doesn't die when he uses it (Or blow his eyelids off when he closes them) is that his body is naturally immune to the effects. He produces a psionic field that is immune. Ruby quartz is similarly protected which is why it's used in his lenses.