The human eye does have an unavoidable blind spot and with training this can be effectively shrunk Australian researchers have found. The optic nerve that sends visual signals to the brain must pass through the retina which creates a hole in that light-sensitive layer of tissue. When images project to that precise location we miss them. This blind spot can be shrunk despite the fact that the hole in our visual field cannot be. The findings raise the possibility that similar methods might improve vision in people with age-related macular degeneration which is the leading cause of blindness. (Read: Glaucoma
