The feeling of flashing eyes can be caused by physiological factors, refractive error, vitreoretinal abnormalities and other factors.
1. Physiological factors: the normal human pupil diameter of 2.5-4.0mm, in the dark environment, the pupil diameter is further expanded, when more than 7.5mm and face the light source is prone to produce the symptoms of glare, i.e., around the light source around a circle of halo, the patient will be manifested as a flashing sensation of visual objects.
2. Refractive error: Due to the different refractive power of the eye in different meridian, the parallel rays of light cannot form a focus after passing through the refractive system of the eye, which can lead to astigmatism, and the patients can also show double vision and flashing sensation.
3. Vitreoretinal abnormality: it can be caused by the detached vitreous body pulling the retina after condensation, and the patient will have “flash” vision, and the retina can be degenerated or cracked.
Patients with flashing vision should consult a doctor as soon as possible for a clear diagnosis, and under the guidance of a specialist, actively carry out appropriate treatment, which will help to alleviate the uncomfortable symptoms as soon as possible.