Confuse Ray was a thrown ball when it was used by Pokemon who had an orb (like Spoink), some kind of other body part that could generate energy (example Chinchou's antennae), or hands (such as Haunter).
Otherwise it was through the eyes or a complicated energy balls maneuver like with Chandelure and Watchog. I'm not sure how Umbreon would do it, but I feel it likely the energy balls maneuver or through the eyes would be most fitting.
Maybe the gold rings glow, create balls of energy that dart over at the target like a barrage of homing missiles?
Edited by ~L~, 12 May 2013 - 10:57 PM.