It might seem harmless. You come home tired, lie down “just for a minute,” and suddenly wake up hours later — still wearing your contact lenses. Or maybe you’ve done it intentionally, thinking it’s no big deal.

But according to eye care professionals, sleeping with your contact lenses on can have serious consequences — and many people don’t realize the risks until it’s too late.

Let’s break down what really happens when you sleep with your contacts… and why experts strongly advise against it.

 Why Sleeping With Contact Lenses Is Risky

Your eyes need oxygen to stay healthy. During the day, your eyes get oxygen directly from the air. But when you wear contact lenses, especially overnight, that oxygen supply is reduced.

Now add closed eyelids into the mix while you sleep — and your eyes are getting even less oxygen than usual.

 This creates the perfect environment for:

• Bacteria buildup
• Dryness
• Irritation
• Infection

Even lenses labeled as “extended wear” can still pose risks if not used exactly as prescribed.

 The Most Common Consequences

Here are the most important risks you should know about:

1. Eye Infections

Sleeping in contacts significantly increases your risk of eye infections, including Keratitis.

This condition involves inflammation of the cornea and can be caused by bacteria, fungi, or parasites.

Symptoms include:

• Redness
• Pain
• Blurry vision
• Sensitivity to light

In severe cases, it can even lead to vision loss if not treated promptly.