Board Thread:Lore Discussion/@comment-72.241.239.167-20140311020135/@comment-5989209-20140712132248

Magnus was and is not an Aedra. He's still an Et'Ada. No, Daedric Runes are pretty much unique to Oblivion. Finally, I believe they call it the Eye of Magnus simply because it radiates magicka, of which Magnus is the source. When Magnus tore through Oblivion to Aetherius, magicka is what he left behind. All magicka is related to Magnus.

My own two cents? The Eye is connected to Magnus. Those may not be Daedric runes, but they should be familure to a lot of us here. It's harder to tell in Skyrim, but in Oblivion it might be easier to see that they look very similar to the runes on Elder Scrolls which looks very similar to the Scroll like word wall in Apocrypha.