If you have ever wondered what causes eye floaters, it is time to learn a little about this common eye issue. After all, many people in their twenties and older have experienced floaters at some point, some more than others. In most people, it is completely normal, while in others, it can be a predictor of serious medical issues, such as retinal detachment.
The simplest way to explain what causes eye floaters is that your eye contains a gel called the vitreous humor, which sits between the lens of the eye and the retina in order to help keep the eyeball’s round shape. It is made up of water, collagen, and hyaluronic acid. The latter substance retains water molecules, but in time, it slowly releases them into the vitreous. As the eye ages, parts of the collagen and hyaluronic acid tend to break off and float in the water of the eye. Any time light is passed through the substance, a shadow is formed, which is what you end up glimpsing.
Since all this takes place over time, teenagers, children, and infants do not typically get eye floaters, as their eyes have not aged enough for the vitreous to deteriorate. If you have ever gotten eye floaters, you may have noticed that you cannot look right at them, as they are constantly moving. In fact, when you move your eyes, the floaters move as well, so you will never be able to get a good look at them.
Clearly, floaters often occur naturally, so in most people, they are nothing to be concerned about. However, one major issue that is worth paying attention to is the risk of retinal detachment. One sign of this is the sudden occurrence of lots of floaters, usually along with flashes of light. If you are unsure what causes eye floaters in your case, it is a good idea to see an eye doctor to make sure that what you are experiencing is normal, and not a symptom of an issue that can cause blindness.