Rabbits will often respond to shapes. If I walk into a rabbit room carrying a laundry basket or garbage bag, I almost always get a reaction. They don't recognize me.
Not sure about myother bunnies, but Pipp never responds to hand movements or light, I've tried this because she sleeps with her eyes open, I'm trying to figure out if she's awake or not. Nada. (She's the only one who doesn'trespond to the shape shifting, though, so she may just be a little weird).
They have such a huge viewing area, they don't have to move their eyeballs, so it's tough. There may be info in the Library under the Eye category. (Just click on the 'Topic' bar to sort the Index alphabetically).