Vitreous detachment occurs when the vitreous gel, a clear substance filling the eye, begins to pull away from the retina, the light-sensitive layer at the back of the eye. This process is common as people age and can lead to symptoms like floaters or flashes of light. While it can be alarming, many people experience it without serious complications. In some cases, however, vitreous detachment can lead to more serious issues, such as a retinal tear or detachment. It's essential to consult an eye care professional if you notice sudden changes in your vision, as early detection can help prevent further damage to the eye.