Health

As in days without real, restive sleep, I'll see see red tracers when I look at something then turn away, like an afterimage when stating at a bright light too long.

Another thing I'll get from time to time is a random, sort of rippled transparent bright spot that won't go away quickly in or near the center of my vision...the shape and look of that reminds me of the spacial 'tear' the villian in Star Trek Generations was trying to get back in to the movie