Closed-eye hallucinations are related to a scientific process called phosphenes. These occur as a result of the constant activity between neurons in the brain and your vision. Even when your eyes are closed, you can experience phosphenes. At rest, your retina still continues to produce these electrical charges.

Is it normal to occasionally see floaters?

In most cases, the occasional eye floater or flash in your vision isn’t something you need to worry about. This often happens as you age and it’s very normal. However, if you start to notice a lot more floaters than you’ve experienced in the past or many flashes, you should call your doctor.

When should I be concerned about floaters in my vision?

Contact an eye specialist immediately if you notice: Many more eye floaters than usual. A sudden onset of new floaters. Flashes of light in the same eye as the floaters. Darkness on any side or sides of your vision (peripheral vision loss)

Are floaters and flashers a sign of something serious?

Floaters & Flashers. Are small specks of dust or wispy threads that drift in front of your vision, or the sensation of a flash of light, a sign of a serious eye problem? Most of the time they are not. Light flashes can, however, be a symptom of a more serious eye problem.

What are floaters and why do they happen?

Floaters usually happen because of normal changes in your eyes. As you age, tiny strands of your vitreous (the gel-like fluid that fills your eye) stick together and cast shadows on your retina (the light-sensitive layer of tissue at the back of the eye).

What causes floaters that look like wispy threads?

This is what causes the floaters that look like wispy threads. Very rarely, something that looks like a floater turns out to be tiny droplets of blood from the inside lining of the eye. This could be caused by an injury or by several conditions of the eye. When there is bleeding, there is a greater danger of losing vision.