Can you tell me what blue field entoptic phenomenon is?

You see blood cells: The blue field entoptic phenomenon occurs when one looks at a uniform blue background. Near the central vision, one sees light dots wiz around and by, in each eye it looks different. These white/transparent dots are white blood cells seen as they pass through the capillaries (small blood vessels) of the retina near the fovea (spot for central vision). Not very none can see this phenomenon.