Well, looks like you are very interested in playing video games right? As a matter of fact, any high-tech products, especially electrical products, would be of some damage to your eyes, since there would always be some radiation which would be harmful to our eyes. Anyway, kenect is placed on your head and you see images before your eyes, that's how it works. Hope you play less of it and protect your eyes.
Yes, using kinect damages your eyes because of the radiation. When you play it, the large number of radiation resource will make your eyes get tired easily. You should not play it often. You could just have the rest during the kinect. If your eyes feel not comfortable, you need to stop and have the good rest and use the eye drops.