Hi,
Yesterday I had a strange experience. I was walking back from our garden oustide, sat at my computer, and noticed a persistent phosphene was preventing me from reading my screen. Here is what it looked like:
- Arc circle (not a blotch), covering a small % of my vision field (but initially centered precisely, which prevented me from reading anything - it eventually moved out of the way)
- Flashing
- Growing and creeping slowly across my field of vision, but staying a more or less complex curve - never becoming a blotch.
- Disappearing within 1/2 hr or so. I am not sure if it disappeared really or simply moved outside of my field of vision. It started at the center, but moved further and further away.
- Still visible with either or both eyes closed.
- Not affected either way by eye rubbing (obviously, eye rubbing induced the traditional pressure phosphene, which are very different)
Since then I've had a low grade headache BUT I am naturally subject to those. This one is mostly felt when I moved my head and is not felt otherwise.
Before this event, here is what I was doing:
- Working at my computer,
- Spent a few minutes in the garden, very minor activity,
- I am a 35yr old Caucasian male,
- No alcoholisme / hypertension / drug use,
- Slightly overweight (am 185 Lbs and 5'10", and I should be 30 Lbs lighter given my frame and muscular mass)