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Light sensitivity is a condition where bright light causes discomfort or pain to your eyes. The medical term for this is photophobia. It is not an eye disease but is a symptom of another underlying issue. For some people, it is a mild annoyance, while for others, even normal indoor light can be painful.
read more about light sensitivity (photophobia) ...Many different conditions can cause your eyes to be sensitive to light. One of the most common causes is a migraine headache. Eye problems like dry eye syndrome, a scratched cornea, or inflammation inside the eye (uveitis) are also frequent causes. People with lighter-colored eyes can also be naturally more sensitive to bright light.
The best way to get relief is to treat the problem that is causing the sensitivity. For immediate comfort, you can wear UV-blocking sunglasses and a wide-brimmed hat when you are outdoors. Inside, try to dim the lights and reduce the brightness on your computer and phone screens. Avoiding harsh fluorescent lights can also help.
Long hours staring at bright digital screens can lead to eye strain and make you feel more sensitive to light. To help with this, you can lower the brightness of your display or use "dark mode" when possible. It also helps to follow the 20-20-20 rule: every 20 minutes, take a 20-second break to look at something 20 feet away.
For people with chronic light sensitivity, especially related to migraines, standard sunglasses can sometimes make the problem worse by "dark adapting" the eyes so they become even more sensitive when taken off. A specific solution is FL-41 tint. These are lenses with a specific rose-colored hue that filters out the blue-green wavelengths of light known to trigger the brain's pain centers. Unlike dark sunglasses, FL-41 lenses can be worn indoors to provide relief without compromising your vision or worsening your light adaptation.
It can be. If you suddenly develop severe light sensitivity, especially with a bad headache, eye pain, or blurry vision, it could be a sign of a serious problem like meningitis or uveitis. In this case, you should see a doctor right away.
A sudden change could be caused by a new eye infection, a scratch on your eye, or inflammation. It is also a very common warning sign that a migraine is about to start.
Usually, the sensitivity goes away when the underlying cause is treated. If you have a long-term condition like chronic migraines, the light sensitivity may be a recurring symptom.
You should see an eye doctor if your light sensitivity is new, severe, or lasts for a long time. It is very important to seek immediate medical care if your light sensitivity comes with a severe headache, eye pain, a very red eye, or a sudden change in your vision.
1. Photophobia (Light Sensitivity): Symptoms, Causes & Treatment. Cleveland Clinic. https://my.clevelandclinic.org/health/symptoms/photophobia. October 4, 2023.
2. Photophobia. MedlinePlus. https://medlineplus.gov/ency/article/003041.htm. April 29, 2025.
3. Dry Eye. National Eye Institute. https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/dry-eye. August 6, 2025.
4. Corneal Abrasion: Symptoms, Treatment & Prevention. Cleveland Clinic. https://my.clevelandclinic.org/health/diseases/14423-corneal-abrasion. March 29, 2023.
5. Migraine. MedlinePlus. https://medlineplus.gov/ency/article/000709.htm. February 11, 2025.