The vitreous humor is a clear, gel-like substance that fills the space between the lens and the retina in the eye. It helps maintain the eye's shape and provides support to the retina, which is crucial for proper vision. This fluid is mostly composed of water, collagen, and hyaluronic acid, allowing it to be both flexible and stable. As we age, the vitreous humor can undergo changes, leading to a condition known as vitreous detachment. This occurs when the vitreous pulls away from the retina, which can sometimes cause floaters or flashes of light. While often harmless, it is important to consult an eye care professional if these symptoms arise, as they can indicate more serious issues related to the retina.