Monday, 17 September 2018
I had a Scintillating Scotoma again Sunday 16th September. The last one was August 16th, this summer.
So, yesterday Sunday, I saw this scintillating image again. It popped into my day vision as a distant speck, which gradually got larger and became central in the vision of my left eye. I carried on with what i was doing, aware that the scintillating colourful shape was snaking in my vision.
Not sure what this means but when trying to get some information on scintillatin scotoma, further down was a section on phosphene created by intense, changing magnetic fields, such as with transcranial magnetic stimulation.
A phosphene is a phenomenon characterized by the experience of seeing light without light actually entering the eye. The word phosphene comes from the Greek words phos (light) and phainein (to show).[1] Phosphenes that are induced by movement or sound may be associated with optic neuritis.[2][3]
Phosphenes can be directly induced by mechanical, electrical, or magnetic stimulation of the retina or visual cortex as well as by random firing of cells in the visual system. Phosphenes have also been reported by meditators[4] (commonly called nimitta), people who go for long periods without visual stimulation (also known as the prisoner's cinema), or those who are using psychedelic drugs.[5]
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