SLASH'EM introduces a number of monsters similar to the Floating eye. Unlike the floating eye, the new monsters possess offensive gaze attacks and will use them on you whenever they get a chance. All are also mindless, making it more difficult to approach them after blinding yourself to avoid their gaze.
See also The Beholder.
The gaze attack of the Blinking eye is identical to the attack of the Quantum mechanic. It has the same speed as a player without speed and will cause you to teleport on every turn that it is able to lock gazes, making it extremely annoying to approach without either a blindfold/towel or teleport control. However, if you have teleport control, during an intense battle you can save it for last, and use it for the free teleportation. Eating the corpse of a blinking eye has a very large chance of conveying teleportitis.