After having some new glasses with an anti glare coating I noticed that the lens' steam up on the insides ie the lens side that faces the eye.
I use them mainly when I'm MNing working on my laptop indoors. And I've noticed its happening with my other glasses too, so can't just blame the new ones. I'm not hot or sweaty; don't live in a particularly hot or cold house; no hot flushes. I don't quite understand why this is now happening.