"One eye open, one eye closed/missing" is a well documented, recurring, theme in "old world" Paleolithic portable rock art. According to James Harrod, Ph.D., it may have endured to the Nourse/Celtic times with the mythological "One-eyed Oden" being a more recent manifestation of this meme element. Please see Harrod's OriginsNet web site on side panel for more information.
Very up close of sparkling eye of Oregon artifact. There may be another face depicted in micro-carving in the reflective stone material of the eyeball.