I can't believe someone would design such a thing, but it exists. Here is a web site and pictures to prove it.
Below is a brief description of the product from the site: "USB Eye Massager is the latest-designed health care Product specially for the Person which long time use their eyes, Such as the Computer operator. The product could relax the stress of the Eyes. and make your whole body in the situation of the unstressing by the product vibration."