Waking up to find yellow, crusty discharge in the corners of your eyes is a common experience that many people encounter. While it may seem alarming at first, this phenomenon is a natural part of your body’s cleaning process. In this article, we’ll explore what this eye discharge really is, why it occurs, and when you should be concerned.
What Is the Yellow Stuff?
The yellowish crust that you notice in your eyes upon waking is known as eye discharge or rheum. This substance is a combination of:
- Skin cells
- Oils produced by your eyelids
- Dust or tiny particles
- Dried mucus from your tear ducts
Throughout the day, your eyes produce this mixture, but blinking helps wash it away. At night, however, when your eyes are closed and not blinking, the discharge accumulates in the corners of your eyes, resulting in the familiar “sleep” or “eye crust” you see in the morning.
Why We Produce It
Your eyes create this discharge as part of their ongoing effort to stay clean and protected. While you sleep:
1. Your Eyes Flush Out Particles
During the night, your eyes work to capture and remove dust, allergens, and microscopic debris.
