I would have read it in the mid-90s, but I'm not sure if was new at that time. The main character of the series sees the world normally through one eye, but the other shows a demonic version of things. He wears an eye patch to switch back and forth.
In the issue I read, he goes to visit his mother(I think) in a hospital. While there, a priest joins him in an elevator and pushes the button for the basement. Looking at the priest with the "demon" eye reveals him as a demon. The priest-demon is killed with a shovel of hot coals to the face.