Why Are My Eyes Always Tired? 8 Possible Causes
Do your eyes constantly feel tired, heavy, dry, sore, or strained, even after a good night’s sleep? You’re not alone. Eye fatigue is a common complaint, especially for people who spend long hours looking at computers, phones, tablets, and other digital screens. While occasional eye fatigue is usually temporary, persistent tired eyes can sometimes be a sign of an underlying eye or vision problem.
Here are 8 common reasons your eyes may always feel tired.
1. Digital Eye Strain
One of the most common causes of tired eyes is spending extended periods looking at digital screens. When you’re looking at a screen, you tend to blink less frequently. This can cause the surface of your eyes to become dry and uncomfortable.
You may notice:
- Tired or heavy eyes
- Burning or irritation
- Blurry vision Headaches
- Difficulty focusing
- Increased sensitivity to light
Try following the 20-20-20 rule: every 20 minutes, look at something about 20 feet away for at least 20 seconds.
2. Dry Eye
Dry eye can make your eyes feel tired even when you haven’t been doing anything particularly demanding.
When your eyes don’t produce enough tears, or your tears evaporate too quickly, the surface of the eye may become irritated.
Common symptoms include:
- Grittiness or a sandy sensation
- Burning
- Redness
- Watery eyes
- Fluctuating vision
- Eye fatigue
If you’re constantly reaching for artificial tears but your symptoms keep returning, it may be worth having your eyes evaluated for the underlying cause of your dry eye.
3. An Outdated Glasses Prescription
Your eyes may work harder to maintain clear vision when your prescription is no longer meeting your visual needs.
An outdated drescription can contribute to:
- Eye strain
- Headaches
- Blurry vision
- Difficulty focusing
- Tired eyes
If you’ve noticed that your vision isn’t as comfortable as it used to be, an eye examination can determine whether your prescription has changed.
4. Uncorrected Astigmatism
Astigmatism occurs when the cornea or lens has an irregular shape, which can cause blurry or distorted vision.
Even a relatively small amount of uncorrected astigmatism can contribute to visual discomfort for some people, particularly during prolonged near work.
5. Too Much Screen Time
It’s not only your phone or computer that can contribute to eye fatigue. Long periods of reading, gaming, watching television, or other close-up activities can place sustained demands on your visual system. Taking regular breaks and changing your viewing distance can help reduce prolonged visual strain.
6. Poor Lighting or Glare
Lighting can make a big difference in how comfortable your eyes feel.
Working in very bright light, dim lighting, or dealing with reflections and glare from a screen can contribute to visual discomfort.
Consider adjusting your workspace so that your screen isn’t directly facing a window or another strong light source.
7. Contact Lens Discomfort
Contact lenses can sometimes contribute to tired, dry, or irritated eyes, particularly when worn for long periods.
Discomfort may be related to lens material, fit, wearing time, environmental conditions, or an underlying dry-eye problem.
If your contacts regularly feel uncomfortable by the end of the day, your optometrist can assess your lenses and the health of your eyes.
8. An Underlying Eye or Health Condition
Persistent eye fatigue isn’t always caused by screens.
Certain eye conditions can cause discomfort, blurry vision, or difficulty focusing. Some general health conditions and medications can also affect the eyes.
That’s why ongoing or unexplained eye fatigue shouldn’t simply be ignored.
When Should You Have Your Eyes Checked?
Consider booking an eye examination if your tired eyes:
- Happen frequently or are getting worse
- Are accompanied by blurry or fluctuating vision
- Cause frequent headaches
- Are associated with significant dryness or irritation
- Make it difficult to work comfortably
- Continue despite taking regular screen breaks
If you experience sudden vision changes, significant eye pain, severe redness, flashes of light, or a sudden increase in floaters, seek prompt medical attention.
Give Your Eyes a Break
Tired eyes can have many different causes. Sometimes it’s simply too much screen time. Other times, dry eye, an outdated prescription, contact lens discomfort, or another underlying issue may be contributing.
A comprehensive eye examination can help determine what’s behind your symptoms and whether additional treatment or changes to your eyewear are appropriate.
Looking for an Optometrist in Etobicoke?
At Humber Bay Eye Care, we provide comprehensive eye examinations and personalized care for patients in Humber Bay Shores, Etobicoke, and the surrounding Toronto community.
📍 2129 Lakeshore Blvd. West, Etobicoke, ON