Originally Posted by
Vakanai
That's kind of what I was implying, that he only lets Lois see his face when he's ready for her to know.
Instead of glasses being the disguise, Superman just doesn't let Lois see his face. With his super hearing he knows Lois is on her way and he flies off after saving the day just before she arrives to report on the scene, or he uses his super speed to rescue her or stop whatever when she's around so all she sees is a blur. She doesn't even get to compare Clark's face to an image of Superman because no one's managed to take a good picture of him yet because of the super speed blur effect. I even thought up an idea relating to his heat vision that when he's out as Superman he's constantly shooting invisible and harmless infrared rays from his eyes which messes with the pictures of older and cheaper types of cameras. If you do something like that, that utilizes his powers, then the secret identity working even against someone like Lois is no longer a stretch that makes anyone look dumb.