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Photopsia is the presence of perceived flashes of light in the field of vision.. It is most commonly associated with: [4] posterior vitreous detachment; migraine aura (ocular migraine / retinal migraine)
Many variations occur, but scintillating scotoma usually begins as a spot of flickering light near or in the center of the visual field, which prevents vision within the scotoma area. It typically affects both eyes, as it is not a problem specific to one eye. [5] [6] The affected area flickers but is not dark. It then gradually expands outward ...
All but one observer reported seeing fainter but a higher number of "points" or short lines in the center of visual field. When the beam entered both eyes in a lateral orientation, the number of streaks reported increased. The orientation of the streaks corresponded to the orientation of the beam entering the eye.
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Visual snow is a phenomenon where a person perceives visual disturbances, such as fine graininess or "static," in their field of vision. This can occur in low-light conditions, in the dark, or when the visual system amplifies light perception.
The bright light overwhelms the retinas of the eyes and generally gradually fades, lasting anywhere from a few seconds to a few minutes. However, if the eyes are exposed to a high enough level of light, such as a nuclear explosion, the blindness can become permanent. Flash blindness may also occur in everyday life.
Flashes of light in vision ; Experiencing a "dark curtain" or shadow moving from the peripheral vision toward the central vision; Sudden blurred vision; Rarely, a retinal detachment may be caused by atrophic retinal holes, in which case symptoms such as floaters or flashes of light may not occur. [9] [10]
Professional advice should be sought in cases of doubt, as retinal detachment, a serious condition, also can cause flashes in the eye. They are named after Robert Foster Moore (1878–1963), a British ophthalmologist .
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