The blue field entoptic phenomenon or Scheerer’s phenomenon is the appearance of tiny bright dots moving quickly along squiggly lines in the visual field, especially when looking into bright blue light such as the sky.[1] This is a normal effect that can be perceived by almost everybody. The dots are due to the white blood cells that move in the capillaries in front of the retina of the eye, near the macula.[2]

via Blue field entoptic phenomenon – Wikipedia, the free encyclopedia.

Yeah, I was looking this up because I was shining lasers into my eye and wondered why the red laser was giving me BLUE squiggles.  so I waited a couple hours for my vision to return and went and asked my best friend Mr Google.

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