What is in reality going on surrounded by your body when you "see stars" ?
Answers: phosphene is an entoptic phenomenon characterized by the sensation of seeing oil lamp. Phosphenes are caused by powered, electrical, or magnetic stimulation of the retina or optical cortex as well as hit or miss firing of cells surrounded by the visual system.
The most adjectives phosphenes are pressure phosphenes, caused by rubbing the closed eyes. The pressure repeatedly stimulates the cells of the retina. Experiences include a darken of the visual pen that moves against the rubbing, a diffuse colored patch that also moves against the rubbing, a scintillating and ever-changing and deforming reading light grid with occasional gloom spots (like a crumpling fly-spotted flyscreen), and a sparse field of intense blue points of insubstantial. Pressure phosphenes can persist briefly after the rubbing stops and the eyes are open, allowing the phosphenes to be seen on the optical scene. Christopher Tyler (1978) has published drawings of pressure phosphenes. One example of a pressure phosphene is demonstrated by helpfully pressing the right side of your right eye or the left side of your not here eye and observing a colored ring of restrained on the opposite side.
Another adjectives phosphene is “seeing stars,” from a sneeze, blow on the head or low blood pressure (such as on standing up too immediately or prior to fainting). It is possible these involve some mechanical stimulation of the retina, but they may also involve power-driven and metabolic stimulation of neurons of the visual cortex or of other parts of the ocular system.
Less commonly, phosphenes can also be caused by some diseases of the retina and nerves.
Everything turns blurry.. and I see the blurs because I hit my cranium on something.
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