Bright sun, headlamps, phone screens at times and also indoor lighting causes eye discomfort. We have what is called photophobia which is to say when light produces unusual discomfort or pain. It is important to understand what photophobia causes which in turn may range from a temporary irritation to a sign of an eye health issue that requires medical care.
Some people report mild sensitivity to bright lights. Also some may present with photophobia which causes light sensitivity eye pain,, redness, tearing, blurred vision, or headache. Persistent and severe symptoms should not be dismissed.
What Is Photophobia?
Photophobia is a term for when the eyes’ sensitivity to light is increased which in turn causes discomfort. Also it is a misnomer that it is a fear of light which in fact it is not. Instead it is a symptom present in many eye and neurological conditions.
Common photophobia causes reported to be a symptom of migraine, dry eye, inflammation, infection, corneal injury and also some medications. Also per National Library of Medicine’s MedlinePlus we see that uveitis, corneal abrasion, corneal ulcer, migraine, eye injury, and recovery period after eye surgery are put forth as other causes.
What Are the Common Photophobia Causes?
The cause for photophobia is very individual. Some cases of photophobia causes are from surface eye issues, while others from within the eye itself or the nervous system.
| Possible cause | Symptoms that may occur with light sensitivity |
| Dry eye | Burning, gritty sensation, redness or blurred vision |
| Corneal problem | Eye pain, watering, redness or blurred vision |
| Migraine | Headache, nausea and migraine light sensitivity |
| Uveitis | Eye pain, redness, blurred vision and light sensitivity |
| Eye injury or infection | Pain, redness, watering or discharge |
Dry eye is a possible cause. If the tear film does not do its job right the surface may become irritated and sensitive. The National Eye Institute reports that light sensitivity is a symptom which may go with dry eyes.
Another which is a large group of photophobia causes we see is that related to the cornea. The corneal inflammation which is the clear front of the eye. Injuries, infections or inflammation of the cornea may cause light to be an issue. The National Eye Institute reports that corneal issues may cause eye pain, blurred vision, red and watery eyes, and light sensitivity.
Can Migraine Make Light Hurt the Eyes?
Yes. Migraine light sensitivity is common during migraine attacks. It is not uncommon for a person to seek out a dark room as bright lights aggravate the issue. Also at the same time headaches, nausea, and visual disturbances may present themselves.
Medline also reports that of the more common symptoms that people experience with migraine is an increased sensitivity to light and to sound. Also it is found that some people may have bright or flashing lights as a trigger for their attacks.
However not all cases of light sensitivity are due to migraine. Eye pain or redness in addition to photophobia may point to another issue. An eye exam can help to tell which issue is at play, that of migraine related symptoms or that of other photophobia causes.
When Can Corneal Problems Cause Photophobia?
The cornea is a very delicate tissue with many nerve endings. Thus injuries, infections and corneal inflammation may cause great pain.
Contact which wearers need to take extra care. Issues like pain in the eye, redness or tiredness is a report of a possible cornea issue. Also from the National Eye Institute we are told that symptoms of pain, redness, sudden blur in vision, out of the blue tearing, or light sensitivity in contact lens users should remove their lenses and see an eye doctor.
How Do Eye Doctors Diagnose Photophobia?
Due to the wide range of photophobia causes diagnosis is put toward determining the root issue. An ophthalmologist will ask when the symptoms started, which eyes are affected and if there is also a head pain, redness, discharge or change in vision.
During a normal eye exam we look at the cornea, the pupils and internal eye structures. Also if there are symptoms we may test for infection, inflammation, injury, dry eye or neurological conditions.
| Situation | Recommended action |
| Mild, short-lived sensitivity without other symptoms | Reduce irritating light and monitor symptoms |
| Recurrent migraine light sensitivity | Seek medical assessment if attacks continue |
| Painful red eye with photophobia | Arrange prompt eye evaluation |
| Contact lens wearer with pain or redness | Remove lenses and seek eye care |
| Sudden vision change with severe pain | Seek urgent medical attention |
When Should Light Sensitivity Be Taken Seriously?
Severe light sensitivity eye pain requires medical attention, in particular when it comes up suddenly. Also if you have persistent photophobia which goes along with redness in the eye, blurred vision, pain which is a great deal, headache, nausea, injury to the eye, or discharge from the eye, you should go in for an evaluation.
MedlinePlus says that if you have severe or painful light sensitivity, or it is associated with red eyes, headaches or blurred vision, or it doesn’t improve in a day or two, you should see a doctor.
Recognizing that photophobia causes is a serious issue at its onset may help in the preservation of eye health and see to it that the base condition is put forward for proper treatment.
Conclusion
Photophobia is a symptom which in turn may be a result of the range of photophobia causes which include the common like dry eye and migraine as well as more severe issues like corneal disease, infection and inflammation that may require immediate care.
Occasional mild sensitivity will go away when the trigger does. But persistent light sensitivity, eye pain, redness, blurred vision, or sudden changes should not be ignored. A full eye exam will determine the cause and put together the right care plan. At ASG Eye Hospital we recommend that people with ongoing or severe symptoms see an ophthalmologist for a personal assessment.
Frequently Asked Questions
1. What are the most common photophobia causes?
Common photophobia is seen in cases of migraines, dry eye, corneal injury, infection, inflammation within the eye, and also with certain medications.
2. Can dry eyes cause sensitivity to light?
Yes. Dry eye issues which in turn irritate the eye surface and cause issues with bright light. You may also notice a burning, a grating sensation and temporary blurring of vision.
3. Why do migraines make my eyes sensitive to light?
Migraine light sensitivity is a result of the fact that migraines play to how the sensory systems which include that of the eyes function. Some people develop very uncomfortable reactions to what would be normal indoor lights.
4. Can corneal inflammation cause severe eye pain?
Yes. Corneal inflammation present with pain, redness, tearing, blurred vision and light sensitivity. A red painful eye requires prompt evaluation.
5. When should I see an eye doctor for photophobia?
Seek medical care when you have severe, sudden, persistent eye pain or that which comes with redness, blurred vision, injury, discharge or any other serious symptoms.
References Links
- MedlinePlus, U.S. National Library of Medicine — https://medlineplus.gov/ency/article/003041.htm
National Eye Institute, U.S. National Institutes of Health — https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/corneal-conditions
