Did you know your eyes breathe? The cornea — the transparent outer layer of your eye — has no blood vessels. Unlike most body tissues that get oxygen through the bloodstream, your cornea absorbs oxygen directly from the air through the tear film on the surface of your eye. This is crucial for maintaining its clarity and allowing light to pass through unobstructed. This unique oxygen supply system is why extended contact lens use can be harmful — it blocks the cornea from “breathing.” Without enough oxygen, the cornea can swell, become irritated, or even suffer permanent damage. So take care of those air-breathing marvels every time you blink — your vision literally depends on it. #EyeFacts #HumanBody #ScienceGeeks #CorneaHealth #VisionScience