Vitreous Humor

What is it?

The vitreous humor is a jelly-like liquid that fills the cavity of the eye. It is stuck to the retina, but in some aging people, the vitreous can separate from it, tearing the retina, and cause flashes of light to appear in the sight, even if their eyes are closed.

What does it do?

Without the vitreous humor, your eye would seem like a collapse ball. The vitreous humor makes up 80% of the eye to hold its fairly spherical shape.

In old people it can separate from the retina and cause retinal detachment or tears. These tears will cause flashes and floaters to appear in the vision.