Most contact lens wearers have experienced it at some point. You watch some TV late at night, drift off, and wake up several hours later and realize you slept with your contact lenses in. While an occasional accident may not cause immediate symptoms, sleeping in contact lenses does increase the risk of irritation and serious eye complications. 

In this blog, we cover what happens when you sleep in your lenses, the risks involved, and what to do if something doesn’t feel right afterward. 

Why eye doctors recommend removing contacts before sleep 

Your eyes depend on oxygen and a stable tear film to keep the cornea healthy. During sleep, oxygen levels naturally decrease. Contact lenses create an additional barrier that limits oxygen flow to the corneal surface, and that combination increases vulnerability to a range of complications. 

Risks associated with sleeping in contact lenses include: 

• Eye infections 
• Corneal swelling 
• Corneal ulcers 
• Redness and irritation 
• Scratches on the corneal surface 

One accidental night in contacts may not cause immediate problems, but repeated overnight wear significantly increases the risk of eye issues over time. 

Why oxygen is crucial for healthy eyes 

The cornea contains no blood vessels, so it depends entirely on oxygen from tears and the surrounding environment. Contact lenses reduce oxygen supply throughout the day. During sleep, blinking stops and tear exchange slows, reducing it further. 

When oxygen levels drop, the eye may experience: 

• Slower corneal recovery 
• Increased dryness after waking 
• Higher risk of bacterial growth 
• Greater inflammation and sensitivity 

Even high-performance lens materials cannot fully replace the oxygen supply lost during sleep. 

Are any contact lenses safe for overnight wear? 

Some contact lenses carry FDA approval for extended wear, allowing certain patients to sleep in them under specific guidelines. However, these lenses are not an option for everyone. Before recommending extended wear, our eye doctors in Delaware, Ohio, evaluate several factors, including: 

• Overall eye health and corneal condition 
• Tear film quality and dryness levels 
• Contact lens material and oxygen permeability 
• Wearing habits and daily routines 
• History of eye infections or irritation 

Even when extended wear is an option, many patients experience better comfort and fewer complications when removing lenses before sleeping. 

What to do if you fall asleep in your contacts 

Waking up with contacts still in can be uncomfortable, particularly if the lenses feel dry or difficult to move. If this happens to you, we recommend the following approach: 

• Blink several times to restore moisture 
• Apply lubricating drops if recommended by your doctor 
• Wait a few minutes for the lenses to loosen before attempting removal 
• Remove lenses carefully without forcing them 
• Give your eyes time to recover before wearing contacts again 

If redness, pain, or blurred vision persists after removal, contact our office to schedule an eye exam. 

Can you wear contacts during short naps? 

No, you shouldn’t. Oxygen levels drop anytime the eyes remain closed, regardless of duration. A short nap carries less risk than a full night of sleep, but it can still cause temporary irritation and discomfort.  

After napping in contacts, you may notice dry eyes, mild redness, blurred vision, or increased lens discomfort. Removing lenses before resting is the safest option. 

Healthy contact lens habits 

Most contact lens problems are preventable. These everyday habits help keep your eyes comfortable and reduce your risk of infection or irritation: 

• Remove lenses before sleeping or napping 
• Follow your replacement schedule exactly 
• Wash and dry your hands thoroughly before handling lenses 
• Use fresh disinfecting solution every time—never top off or reuse it 
• Replace your lens case regularly 
• Attend routine contact lens exams to monitor your eye health over time 

Protecting your vision while wearing contact lenses 

Contact lenses can provide clear, comfortable vision for years, but that depends on the daily habits built around wearing them. Removing lenses before sleep helps protect your corneal health and reduces your risk of complications over time. 

Dr. Campbell and our expert team at Kristin L. Campbell, O.D. in Delaware, Ohio, provide comprehensive contact lens exams and personalized fittings tailored to each patient’s needs. Whether you are considering contacts for the first time or looking to improve your current routine, we can help you find the approach that works best for your eyes.