Last one to leave, turn out the lights
They say that the Eyes are the window to the soul. And the soul, in turn, illuminates with light the whole existence of humans. Some events can hurt deeply, extinguishing the very light of the soul. They leave the person in darkness, which gradually absorbs from within.
But at the same time, you can experience some events with pain only. And not to keep them in the soul, like a thorn, forcing all thoughts to concentrate only on ourselves, we try to drown them out.