When I had my first kundalini experiences about 7 or 8 years ago, I noticed flickering lights "inside" my eyes, especially at night, and have since taken to always meditating in the dark, since things seem to get brighter when I'm meditating.
About three or so years ago, I noticed a marked increase in floaters, especially in my left eye, corresponding to an increase in kundalini energy around the time. My eye doctor said I was fine and that it was just part of being nearsighted. Over time the floaters seemed to go away--or at least my brain learned to ignore them--I'm never quite sure on how exactly this works.
Recently, I again had an increase in floaters, along with flashing lights, and seeing an occassional dark spot in the corner of one eye. I went to the eye doctor and they said I had a hole in my left retina! Said it had been around for a while. Don't know how other doctors missed it. They used lasers to make a seal around it and prevent it from getting bigger or lifting up the retina (fingers crossed that it works well).
The development of these symptoms also corresponded to an increase in kundalini energy, possibly due to taking vitamin k2, which I had started taking in very small doses because it supposedly helped one process vitamin d, which I was having trouble with, for whatever reason. Weirdly, the k2 made me feel great, and noticeably increased my kundalini energy/ecstatic conductivity, but it started also causing scary side effects--high blood pressure, heart palpitations, a rash, and, maybe, damage to my eye (the doctors said it looked like the hole had been there for a while, but only recently started accumulating fluid).
Now of course, it's possible this has little do with kundalini, and more to do with my particular genetics and/or propensity to try weird vitamins, but both times did correspond to increased kundalini energy. Could it be I was too aggressive with sambhavi (I do sometimes do the "manual" method of using fingers to push up the eyeballs, as well) and/or yoni mudra kumbhaka (maybe put too much pressure up there?)?
I notice a few other threads about floaters and flashes, but don't see any real conclusions about what, if any, connection, they might have to spirituality. In addition to floaters and flashes, I sometimes see a kind of shimmering, like a mirage over a hot pavement, and also an occassional tiny point of beautiful blue light. I tend to think these may be more positive things, while the floaters and flashes could just be my messed-up retinas.
Do floaters and flashes ever improve after further practice? Anyone else had such problems? Is there a good way to distinguish what is a normal part of spiritual experiences from what may be a damaged eye?
Thanks so much!