2. Corneal Ulcers

A more serious complication is the development of open sores on the cornea, known as ulcers.

These can occur when bacteria multiply under the lens overnight.

Warning signs:

• Severe eye pain
• White or cloudy spot on the eye
• Excess tearing
• Discharge

This is a medical emergency and requires immediate treatment.

3. Dry Eyes and Irritation

Sleeping with contacts can leave your eyes feeling:

• Extremely dry
• Gritty (like something is stuck in your eye)
• Irritated or itchy

Over time, this can lead to chronic dryness and discomfort during the day.

4. Reduced Oxygen to the Eye

As mentioned earlier, your cornea depends on oxygen. When deprived, it can lead to:

• Swelling
• Blurred vision
• Increased sensitivity

Long-term oxygen deprivation can affect overall eye health.

5. Increased Risk of Serious Complications

Studies have shown that people who sleep in their contact lenses are several times more likely to develop serious eye infections compared to those who remove them before bed.

Even occasional overnight wear can increase your risk — it doesn’t have to be a daily habit.

 “But I Only Did It Once…”

Many people think:

 “It’s just one night, nothing will happen.”

And while some people may not experience immediate issues, the risk is still there. Eye infections can develop quickly and sometimes without warning.

The problem is, you won’t always know when you’ve crossed the line from harmless to harmful — until symptoms appear.

 How to Protect Your Eyes

The good news? Preventing these issues is simple.

 Always remove your contact lenses before sleeping
 Clean and store them properly using recommended solutions
 Replace lenses as directed (daily, monthly, etc.)
 Avoid wearing them longer than recommended
 Give your eyes a break by wearing glasses sometimes

 When to See a Doctor

If you’ve slept with your contacts and notice any of the following, don’t ignore it:

• Persistent redness
• Eye pain
• Blurry or reduced vision
• Light sensitivity
• Unusual discharge

 Seek medical attention as soon as possible. Early treatment can prevent serious complications.