People report seeing "snow", much like the visual noise or "static" on a TV screen after transmission ends. In addition to this visual snow, many of those affected have other types of visual disturbances such as starbursts, increased afterimages, floaters, trails, and many others.

Can visual snow cause after images?

In addition to the static, or “snow”, affected individuals can experience additional visual symptoms such as visual images that persist or recur after the image has been removed (palinopsia); sensitivity to light (photophobia); visual effects originating from within the eye itself (entoptic phenomena) and impaired ...

Is visual snow Bad?

Visual snow syndrome is a very rare disease which can be detrimental to patients. It is often described as a visual disturbance present in the entire visual field with flickering white and black dots, similar to the static seen on an analogue television [2].