bright spot in my visual field when i blink against white surface
For the past six months, I have noticed a roughly circular bright area in the visual field of my left eye, approximately 1–2 cm in diameter. It becomes noticeable when I blink and also when looking at a white background, particularly when the eye moves. It is only present in my left eye.
An ophthalmologist dilated my pupils and examined my eyes but could not find a cause. It is not a floater and does not move with my gaze. It resembles the visual phenomenon you get after looking at the sun, when you have a bright spot or afterimage in your field of vision.