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With posterior vitreous detachment, the vitreous humor detaches from the retina.

Posterior vitreous detachment: This is one of the most common causes of flashes of light in your eye.

Several types of eye-related issues may cause flashes of light to appear in the corner of your eye or field of vision, such as: Some causes may be related to your eye health, while others may be related to other types of health conditions. What does it mean when you see a flash on the side of your eye?Īccording to the American Academy of Ophthalmology, seeing flashes of light in the corner of your eye can be caused by a variety of factors or conditions.

Instead, they tend to be a symptom of another condition. When these fibers tug or pull on the retinal surface, it can cause flashes or light sparks from the friction.įlashes of light in the eye are typically not a condition on their own. Tiny fibers float in the clear vitreous fluid, and some are attached to the surface of the retina.

This means that anything stimulating the retina, including pushing or pulling on the retina, can lead to the transmission of a light impulse – even in a totally darkened room. The retina knows only one “language,” and that is light. It protects the retina and helps your eye maintain its shape. The vitreous humor is a clear jelly-like fluid that takes up a large part of the back of your eye.The job of the retina is to process the focused light that comes in through your pupil and to let your brain convert this information into a picture. It transmits electrical signals to your brain via the optic nerve. The retina is a thin light-sensitive tissue that lines the back of the inside of your eye.Let’s consider the function of the retina and vitreous humor to better understand these flashes.