Bruce Sterling acerbic in Artforum on the art of Omni magazine, as compiled in a new book called The Mind's Eye
I think this stuff looked camp, or just naff, even at the time.
It's sort of airbrush Dali meets sword'n'sorcery paperbacks meets preview of the more cyberdelic rave flyers on the US West Coast
Amazed how long it went on as well, all through the Eighties and into the Nineties
Can't recall if I ever bought a copy - definitely saw it around, flicked through it at . W.H. Smiths I should imagine.
You can find a bunch of old Omni's archived online here and here