The story is about an artist who isn’t very successful until he notices some tiny creatures (aliens?) and they somehow get into his eyes. This makes his art really great, but also drives him crazy. His art is full of those tiny faces, because that is what he sees.
Not sure if it was in a book or a magazine, but I would love to read it again.
I wish I knew. I remember feeling really uneasy when I read it. So, yes. Kinda creepy.
I only read it once or twice. Don’t think it was a Doctor Who novel, but very much in that vein of storyline.