What causes this CS pro player eye area to look like this?

[casadebanho]

First picture he posted on twitter from when he was young
So it means it doesn't have to do with collagen

Is it bad bones?

 

[casadebanho]

I'm talking about the eye bags btw

 

[andy9432]

Recessed orbitals.

 

[Constantin Denis]

mfk had dark circles since he was 4