I was skateboarding by myself at about 1am,when I began to notice that I couldn't see directly in front of me very well, & shortly after that not at all except my surrounding peripheral vision. So I stopped skating due to this strange blindness, & began to pay attention to an indelible image that had appeared directly in front of me, & I mean perfectly in front of my line of sight. It was like when you stare at a light bulb for a little while & then look away or close your eyes, you will still see an image of the light source for a short time, normally having various colors & squiggly like tracers. The thing is I didn't look into any parking lot lamps or any car headlights because the whole time I was looking down at my skateboard. Although the next night I went back & tried several honest experiments of staring at various lights in the area in an attempt to replicate the effect, which included the high beam lights of nearby on coming traffic, yet all of this to no avail. After testing the possibility that this may not have been inexplicable, I'm certain that it was not induced by normal anomalies, in fact I understood exactly what the image was that I saw. The image I saw had perfect bilateral symmetry, & was about the size of a football about 3 feet directly in front of me. There was no squiggly lines either. What I saw was this: It was an occult image called a fnord. The entire image was an all seeing eye, & the black pupil was a silhouette of a gray alien or I am led to think it was as there was also a UFO shape above its head with a flattened pyramid superimposed within it, like the porch roof of the white house. My line of sight was fixated on the silhouette's head at it's 3rd eye. Surrounding the pupil & comprising the rest of the larger all seeing eye image was 2 crescent moons facing each other forming what would be the white of the eye. I suppose the intended purpose of this image was a Sauron like threat along the lines of: "I see you".