Vision Concerns

3 surprising ways sleep apnea can affect eye health

Sleep apnea does more than disrupt rest.

Woman talking to doctor

Sleep and eye health are more connected than they may seem. One of the most common sleep disorders, obstructive sleep apnea (OSA), can affect more than breathing and rest. It may also be linked with some eye problems over time. Studies show it is linked with eye conditions such as glaucoma and dry eye. 

Understanding this link can help with early detection and protect vision long term. Sharing sleep concerns with an eye care provider is an important first step. Here’s what to know. 

Sleep apnea basics 

Obstructive sleep apnea (OSA) is a common condition that causes pauses in breathing during sleep. These breathing pauses can lower oxygen levels in the body.1 

Interrupted breathing during sleep affects an estimated 30 million people in the U.S. Only about 6 million are diagnosed—so about 80% may be unaware they have it.2

Untreated OSA can affect sleep quality and daytime alertness. It is also linked with higher risk of other health problems. Some of those conditions may also affect eye health.1,2 

Common signs include loud snoring, gasping during sleep and feeling very tired during the day. 

To diagnose OSA, a health care provider may recommend a sleep study. A sleep study measures breathing, oxygen levels and how often breathing slows or stops during sleep.1

Early diagnosis and treatment can improve sleep and daytime alertness. It may also help lower some health risks over time.2 

Sleep apnea affects sleep quality, and bedtime light exposure can also impact rest—explore the blue light discount for nighttime comfort.

Sleep apnea and glaucoma risk 

Glaucoma is a group of eye diseases that can cause vision loss and blindness by damaging the optic nerve.3 

Studies show OSA is linked with a higher chance of glaucoma. Experts are still studying why, but one theory is that low oxygen during apnea events may affect the optic nerve. 

Glaucoma often has no early symptoms, so regular eye exams are important. An eye care provider may suggest closer monitoring, especially if there are other glaucoma risk factors.3 

How to protect eye health: 

  • Talk to a doctor about sleep and vision concerns 
  • Share an OSA diagnosis with an eye care provider 
  • Stay on top of regular eye exams 

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Sleep apnea and dry eye risk 

OSA has been linked with a higher rate of dry eye disease in large health studies.4 

Dry eye symptoms can include burning, stinging, redness or blurry vision. 

Even without sleep apnea, not getting enough sleep can reduce tear production and make eyes feel dry or look red.5 

Treatment for OSA can also affect the eyes. A common treatment is a continuous positive airway pressure (CPAP) machine, which helps keep the airway open during sleep. 

If a CPAP mask leaks air, the airflow can dry out the eyes and worsen dry eye symptoms.6 

How to protect eye health: 

  • Tell an eye care provider about dry eye symptoms 
  • Check that a CPAP mask fits well 
  • Ask about using lubricating eye drops 

Stay on top of eye health with an in-network eye care provider. Search now. 

Sleep apnea and overall health 

OSA is linked with other health problems, such as high blood pressure and heart disease. Some people with OSA also have diabetes.1,2 

Diabetes can damage small blood vessels in the retina (the light-sensing tissue in the back of the eye). This can lead to diabetic retinopathy.7 

Managing OSA can improve sleep and support overall health. It’s not clear yet if it prevents eye disease, but it can help eye care providers watch for problems early.2 

How to protect eye health: 

  • For people with diabetes, follow the care plan and get regular eye exams 
  • Take treatments for sleep and other health conditions as directed 
  • Keep up with regular checkups 

How quality sleep supports long-term eye health 

A good night’s sleep supports many parts of the body, including the eyes. Regular sleep helps the eyes stay moist and supports the body’s recovery. Treating OSA can also help prevent repeated breathing pauses during sleep.1,5 

To improve sleep, follow recommended treatment for OSA. These steps can also help: 

  • Keep a consistent sleep schedule 
  • Create a sleep space that is dark, cool and quiet 
  • Limit screen time before bed 
  • Avoid heavy meals close to bedtime 
  • Avoid caffeine later in the day 

Sources 

  1. What is sleep apnea? National Heart, Lung, and Blood Institute, January 9, 2025 
  2. What doctors wish patients knew about sleep apnea American Medical Association, November 7, 2025 
  3. Glaucoma National Eye Institute, November 26, 2025 
  4. Association Between Sleep Apnea and Dry Eye Disease Biomedicines, December 22, 2025 
  5. Why are your eyes red when you wake up? Cleveland Clinic, December 19, 2025 
  6. CPAP machines: Tips for avoiding problems Mayo Clinic, January 21, 2026 
  7. Diabetic retinopathy National Eye Institute, September 11, 2025 
  8. Sleep tips: 6 steps to better sleep Mayo Clinic, January 31, 2025 

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