Light sensitivity, also called photophobia, is discomfort or pain in the eyes when you are exposed to bright sunlight, indoor lighting, screens, or glare. While occasional sensitivity after a long day outdoors may not be concerning, ongoing or worsening symptoms deserve attention. A comprehensive eye exam can help identify what is causing your discomfort and whether treatment is needed.
Light sensitivity is a symptom, not a diagnosis. It can be linked to everyday issues such as dry eyes or headaches, but it may also occur alongside conditions that need prompt eye care.
What can cause light sensitivity?
Your eyes may become sensitive to light when their surface is irritated, when your vision is changing, or when an eye condition affects how light enters or is processed by the eye.
Common causes include:
- Dry eye: When tears do not adequately lubricate the eyes, burning, grittiness, blurred vision, and light sensitivity can occur.
- Migraines: Many people experience light sensitivity before, during, or after a migraine.
- Eye strain: Long periods of screen use, uncorrected vision problems, or glare can make the eyes feel more sensitive.
- Contact lens irritation: An ill-fitting, damaged, or overworn contact lens can irritate the eye.
- Eye inflammation or infection: Conditions affecting the cornea, iris, or other eye tissues may cause redness, pain, tearing, and sensitivity to light.
- Certain medications or recent eye procedures: Some treatments can temporarily affect how comfortable your eyes feel in bright environments.
People with lighter-colored eyes may also be more sensitive to bright sunlight because they have less pigment to filter light. Still, new or persistent symptoms should not be brushed off as a normal inconvenience.
Could dry eye be making bright light uncomfortable?
Yes. Dry eye is a common reason people experience discomfort in bright settings. An unstable tear film leaves the surface of the eye less protected, which can make wind, screens, headlights, and sunlight feel more irritating.
If you also notice burning, stinging, fluctuating vision, watery eyes, or a sandy feeling, dry eye treatment may help address the underlying issue rather than simply masking symptoms with sunglasses or over-the-counter drops.
When should you see an eye doctor for light sensitivity?
Schedule an eye exam if light sensitivity is persistent, interferes with driving, work, or screen time, or occurs with changes in your vision. An exam allows your eye doctor to evaluate the health of your eyes and determine whether prescription updates, dry eye care, or other treatment may be appropriate.
Seek prompt care if light sensitivity begins suddenly or appears with:
- Eye pain, redness, or swelling
- Blurry, decreased, or double vision
- Flashes, floaters, or a curtain-like shadow in vision
- Nausea, severe headache, or halos around lights
- An eye injury or possible foreign object
These symptoms can signal a more serious eye concern and should not wait.
Find relief with a personalized eye exam
Sunglasses, hats, screen breaks, and properly updated eyewear can make bright environments more comfortable, but lasting relief starts with understanding the cause. We can assess your symptoms and recommend care that supports clear, comfortable vision. If light sensitivity is new, persistent, or affecting your day, schedule an eye exam.