If bright lights make your eyes hurt, water or feel uncomfortable, you may have light sensitivity, also called photophobia. This can happen because of dry eyes, migraines, eye infections, inflammation, recent eye surgery or other eye conditions. While mild sensitivity is common, severe or sudden light sensitivity should never be ignored.

Why Do Bright Lights Hurt My Eyes?

Unusual sensitivity or discomfort from light is called photophobia.

Despite the name, it does not mean you are afraid of light.

It means light feels unusually bright, uncomfortable or even painful.

Photophobia can happen with conditions such as:

• Migraine
• Dry eye
• Corneal irritation or injury
• Inflammation inside the eye
• Certain infections affecting the eye
• Recent eye procedures
• Some neurological conditions
• Temporary pupil dilation

The key question is:

Why have your eyes become sensitive to light?

Quick Answer: Why Do Bright Lights Hurt My Eyes?

Mild discomfort when you suddenly move from darkness into bright sunlight can be normal.

But if ordinary light repeatedly causes:

• Eye pain
• Excessive watering
• Burning
• Headaches
• Difficulty keeping your eyes open
• Significant squinting
• Blurry vision

you may be experiencing light sensitivity, or photophobia.

Migraine is strongly associated with photophobia, while dry eye can also make the eye surface more sensitive to light.

If the sensitivity is new, severe or associated with a red painful eye or reduced vision, have it assessed promptly.

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What Is Photophobia?

Photophobia simply means that light causes more discomfort than expected.

You may say:

“Everything feels too bright.”

“Sunlight hurts.”

“I can't keep my eyes open outside.”

“The office lights are giving me a headache.”

“I need to dim every screen.”

Some people experience discomfort only in strong sunlight.

Others become uncomfortable under ordinary indoor lighting.

And some people mainly notice the problem during headaches or migraines.

Photophobia is a symptom, not a disease by itself.

The job of the examination is to work out what is causing it.

Is It Normal for Sunlight to Make Me Squint?

Yes.

If you walk from a dark cinema into bright Abuja sunshine, your eyes need time to adjust.

Your pupils constrict to reduce the amount of light entering the eyes.

Squinting briefly is normal.

What deserves more attention is when you notice things such as:

• Sunlight has suddenly become unbearable
• One eye is much more sensitive than the other
• Normal indoor lighting hurts
• You have eye pain
• Your vision has changed
• Your eye is very red
• You constantly need dark glasses indoors

That is different from simply finding midday sunlight bright.

1. Can Dry Eyes Make Me Sensitive to Light?

Yes.

Dry eye can cause:

• Burning
• Grittiness
• Redness
• Blurry vision
• Scratchiness
• Light sensitivity

The National Eye Institute includes sensitivity to light among recognised dry-eye symptoms.

Your tear film forms a smooth protective layer over the front of your eye.

If that tear film becomes unstable, the eye surface can become irritated.

An irritated eye surface may make bright light much more uncomfortable.

This is especially relevant if your light sensitivity also comes with:

“My eyes feel sandy.”

“My eyes burn.”

“My eyes are dry but still watering.”

If your dry-eye article is already published, link it here using its exact URL.

Why Is Light Sensitivity Worse During Harmattan?

Harmattan can worsen eye-surface irritation because of:

• Dry air
• Dust
• Wind
• Low humidity

If the eye surface is already irritated, bright sunlight may become even more uncomfortable.

You may experience:

• Burning
• Itching
• Watering
• Redness
• Increased squinting outdoors

If Harmattan is your main trigger, read Why Do My Eyes Itch and Water During Harmattan?.

2. Can Migraine Make Light Hurt My Eyes?

Yes.

This is one of the most important causes to understand.

Light sensitivity is very strongly associated with migraine and is part of the diagnostic criteria used for migraine.

During a migraine, you may find:

• Sunlight unbearable
• Indoor lights uncomfortable
• Phone screens irritating
• Headlights painful
• Fluorescent lighting difficult to tolerate

You may also experience:

• Headache
• Nausea
• Sound sensitivity
• Visual disturbance
• Throbbing pain

Some people experience photophobia before the headache becomes obvious, during the migraine, after it settles or even between attacks.

So light sensitivity does not always mean the eyeball itself is diseased.

Sometimes the problem involves how the nervous system processes light.

Can I Have Migraine Light Sensitivity Without a Headache?

Yes.

Photophobia can occur in people with migraine even when headache is not the main symptom.

That is one reason persistent light sensitivity sometimes requires more than an eye examination alone.

If the eyes appear healthy but the history strongly suggests migraine, appropriate medical assessment may be recommended.

3. Can a Scratch on My Eye Make Light Hurt?

Absolutely.

The cornea is the clear front surface of your eye.

It contains many sensitive nerve endings.

A scratch, foreign body or other corneal problem can cause:

• Significant eye pain
• Watering
• Redness
• Blurry vision
• Strong sensitivity to light

Corneal conditions are recognised causes of pain and photophobia.

Patients sometimes say:

“It feels like something sharp is inside my eye.”

or:

“I can't even open the eye in sunlight.”

If light sensitivity began after:

• Something entered your eye
• You scratched the eye
• Dust or metal entered the eye
• You were hit in the eye

have it assessed.

4. Can Contact Lenses Cause Light Sensitivity?

Contact-lens wearers need particular caution.

A red, painful eye in a contact-lens wearer may involve the cornea.

Corneal infection or inflammation can cause:

• Pain
• Redness
• Watering
• Blurry vision
• Photophobia

The National Eye Institute notes that contact-lens-related infections are an important cause of keratitis, which is inflammation of the cornea.

If you wear contact lenses and develop:

red eye + pain + light sensitivity + reduced vision

remove the contact lenses and seek prompt eye care.

Do not simply put another lens into the painful eye.

5. Can an Eye Infection Cause Light Sensitivity?

Some eye infections can.

But this section needs careful wording.

Ordinary mild conjunctivitis and a painful light-sensitive red eye are not the same clinical picture.

If a red eye comes with:

• Significant pain
• Strong light sensitivity
• Blurry or reduced vision
• Contact-lens use

we need to consider conditions affecting the cornea or deeper parts of the eye.

Do not simply buy random antibiotic drops because:

“My eye is red, so it must be infection.”

The cause needs to be identified.

6. Can Inflammation Inside the Eye Cause Photophobia?

Yes.

Inflammation involving structures inside the eye can produce pronounced light sensitivity.

One example is uveitis.

Patients may experience:

• Eye pain
• Redness
• Blurry vision
• Light sensitivity
• Sometimes floaters

This is one reason:

red eye + pain + photophobia

deserves proper assessment.

Photophobia can arise because pain-sensitive structures such as the cornea and iris are involved in the pathways responsible for light-related discomfort.

7. Why Do My Eyes Hurt After They Are Dilated?

During some eye examinations, drops are used to enlarge your pupils.

A larger pupil allows more light into the eye.

For several hours afterwards, you may notice:

• Increased sensitivity to sunlight
• Difficulty with bright environments
• Blurry near vision

That can be an expected temporary effect.

Your pupils gradually return toward normal as the drops wear off.

But severe pain, significant redness or major vision deterioration after any eye procedure should be reported rather than automatically assumed to be normal.

8. Can Eye Surgery Make My Eyes Sensitive to Light?

Temporary light sensitivity can occur after some eye procedures.

How much and how long depends on:

• The procedure
• The condition being treated
• The healing process
• Medications being used

Follow the instructions from the surgeon or eye-care professional who treated you.

If sensitivity is suddenly getting worse rather than better, particularly with pain or declining vision, contact your treating team.

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Why Do Car Headlights Hurt My Eyes at Night?

This is related to light sensitivity, but it deserves its own topic because night-driving glare has several possible causes.

Headlights may appear:

• Too bright
• Star-shaped
• Surrounded by halos
• Blurry
• Scattered

Possible contributors include:

• Astigmatism
• An outdated prescription
• Cataract
• Dry eye
• Dirty spectacle lenses
• Scratched lenses
• Windshield glare
• The brightness and design of modern headlights

If headlights are your main problem, read Why Do Headlights Blind Me at Night?.

That page should remain separate because somebody searching “headlights blind me” has a different problem from someone who cannot tolerate ordinary daylight.

Why Do Lights Look Like Halos?

Halos around lights may occur for several reasons.

Possible causes include:

• Refractive error
• Astigmatism
• Dry eye
• Cataract
• Corneal problems
• Other eye conditions

Do not diagnose the cause from the halo alone.

A particularly important warning combination is:

halos + severe eye pain + red eye + blurred vision + headache or nausea.

That can occur with acute angle-closure glaucoma and requires urgent assessment.

If you are generally concerned about glaucoma, read How Do I Know If I Have Glaucoma?.

Can Glaucoma Make Light Hurt My Eyes?

The common open-angle form of glaucoma usually does not present simply as ordinary light sensitivity.

It often develops without early symptoms.

But acute angle-closure glaucoma is very different.

It can cause:

• Severe eye pain
• Redness
• Hazy or blurry vision
• Halos
• Headache
• Nausea
• Vomiting

That is an emergency.

We should therefore not tell every light-sensitive patient:

“It could be glaucoma.”

The pattern of symptoms matters.

Why Do Office Lights Hurt My Eyes?

Some people find bright or flickering indoor lighting uncomfortable.

Possible contributors include:

• Migraine
• Dry eye
• Digital eye strain
• Existing photophobia
• General visual discomfort

Also consider what else you are doing in the office.

Perhaps you are spending eight hours under bright lighting while:

• Staring at a laptop
• Sitting in air conditioning
• Blinking less
• Sleeping poorly
• Developing headaches

It may be the combination that makes your eyes uncomfortable.

If screens are part of the problem, read Why Do My Eyes Feel Tired After Using a Computer?.

Why Does My Phone Screen Hurt My Eyes?

Again, the screen may not be damaging your eyes.

You may be dealing with:

• Digital eye strain
• Dry eye
• Migraine-related light sensitivity
• Excessive brightness
• An incorrect prescription

Adjust your screen to a comfortable brightness rather than assuming you need a particular type of lens.

If your main problem occurs after phone use, your separate article “Why Do My Eyes Hurt After Using My Phone?” should link here once its URL is confirmed.

Do Blue Light Glasses Help Light Sensitivity?

Do not automatically assume they will.

Blue-light filtering spectacles are not a proven general treatment for digital eye strain.

Photophobia associated with migraine is more complex, and some people with migraine use specially tinted lenses under professional guidance, but this is different from ordinary commercially marketed “blue-cut glasses.”

So if light genuinely hurts your eyes:

Find the cause first.

Do not begin by buying random glasses.

Your separate Blue Light Glasses article should link here once its exact URL is confirmed.

Should I Wear Sunglasses?

Outdoors in strong sunlight, good sunglasses can improve comfort and protect your eyes from ultraviolet radiation.

Look for proper UV protection rather than choosing sunglasses only because they are extremely dark.

But if normal indoor light has suddenly become unbearable, sunglasses should not become a substitute for finding the cause.

Should I Wear Dark Sunglasses Indoors?

Not routinely.

People with severe photophobia may sometimes need specialised approaches, but constantly staying in very dark environments can potentially increase light sensitivity in some people.

The American Migraine Foundation advises against routinely living in darkness and recommends addressing the underlying cause of photophobia.

So instead of:

“I'll just wear very dark sunglasses everywhere.”

ask:

“Why has normal light become difficult for me?”

Can Dry Eye Treatment Reduce Light Sensitivity?

If dry eye is actually causing or contributing to your photophobia, treating the eye-surface problem may improve the sensitivity.

That may involve, depending on the individual:

• Appropriate lubricating drops
• Managing eyelid problems
• Reducing direct airflow
• Taking screen breaks
• Treating associated inflammation
• Other dry-eye management

But treatment needs to match the cause.

Dry-eye drops will not treat migraine, uveitis or a corneal infection.

Can Children Be Sensitive to Light?

Yes.

Children may not use the word:

“photophobia.”

Instead, you may notice:

• Squinting strongly outdoors
• Covering their eyes
• Avoiding bright environments
• Complaining that light hurts
• Watering
• Headaches
• Difficulty keeping one eye open

Some sensitivity may be harmless.

But persistent or new light intolerance deserves assessment, especially if associated with:

• Redness
• Pain
• Reduced vision
• Eye injury
• Behaviour suggesting the child cannot see comfortably

What If Only One Eye Is Sensitive to Light?

That deserves attention.

Migraine often affects light tolerance more generally, whereas a problem affecting one eye may make that individual eye much more uncomfortable.

If one eye develops:

• Pain
• Redness
• Strong photophobia
• Blurry vision

have it examined.

Do not simply wear sunglasses and wait indefinitely.

When Should I Book an Eye Examination?

Arrange an eye examination if:

• Bright light repeatedly hurts your eyes
• Light sensitivity is getting worse
• Normal indoor lighting is becoming difficult
• You constantly squint outdoors
• Your eyes become watery or painful in light
• Your vision becomes blurry
• One eye is much more sensitive
• Your prescription no longer seems comfortable
• Light sensitivity interferes with driving or work

You can see our guide to eye test costs in Abuja.

When Is Light Sensitivity Urgent?

This is the section I would make very clear.

Seek prompt or urgent eye/medical assessment if light sensitivity occurs with:

• Severe eye pain
• Sudden reduction in vision
• A very red painful eye
• Significant corneal injury
• Chemical exposure
• A painful red eye in a contact-lens wearer
• New severe headache with neurological symptoms
• Severe headache with fever and neck stiffness
• Recent eye surgery with worsening pain or vision
• Significant eye trauma

A painful, red, light-sensitive eye is not something to casually self-treat.

What About Flashes of Light?

Flashes are different from ordinary light sensitivity.

Photophobia means external light feels uncomfortable.

Flashes mean you are seeing light that is not actually being produced by an external light source.

Someone may describe:

“Lightning at the side of my vision.”

“Camera flashes.”

“Sparks.”

New flashes, particularly with new floaters or a curtain/shadow over the vision, can be retinal warning symptoms.

Read Why Do I See Black Spots Floating in My Vision?.

What Happens During an Eye Examination for Light Sensitivity?

At Blossom Vision Eye Clinic in Games Village, Abuja, we do not simply say:

“Wear sunglasses.”

We want to determine why the light is uncomfortable.

Depending on your symptoms, assessment may include:

• Visual acuity
• Glasses prescription
• Eyelid and eye-surface assessment
• Tear film
• Cornea
• Slit-lamp examination
• Eye pressure where appropriate
• Retina and optic nerve assessment where appropriate
• Additional investigation or referral if needed

We may also ask:

• When did the light sensitivity begin?
• Is it one eye or both?
• Do you have headaches?
• Do you have migraines?
• Is your eye red?
• Does your eye hurt?
• Do you wear contact lenses?
• Did anything enter your eye?
• Have you recently had eye surgery?
• Are headlights worse than sunlight?
• Does your vision change?

Those questions can dramatically change what we suspect.

Frequently Asked Questions

Why do bright lights hurt my eyes?

Light sensitivity, or photophobia, can occur with migraine, dry eye and several eye conditions. The cause depends on the pattern of your symptoms.

Why does sunlight hurt my eyes?

Some squinting in strong sunlight is normal. Persistent or unusually painful sensitivity may be associated with photophobia and deserves assessment if it is new or severe.

Why do my eyes water in bright light?

Bright light can trigger reflex tearing, particularly when the eye surface is already irritated or sensitive.

Can dry eye cause light sensitivity?

Yes. Sensitivity to light is a recognised symptom of dry eye.

Can migraine make light painful?

Yes. Photophobia is extremely common with migraine.

Why do office lights hurt my eyes?

Migraine, dry eye, digital eye strain and other causes of photophobia may make artificial lighting uncomfortable.

Why do headlights look painfully bright?

Dry eye, prescription problems, astigmatism, cataract and other causes of glare can contribute. If headlights are the main problem, the cause should be assessed rather than assumed.

Can an eye infection cause light sensitivity?

Some eye infections and inflammatory conditions can. Significant photophobia with redness, pain or reduced vision deserves prompt assessment because the cornea or deeper parts of the eye may be involved.

Do I need sunglasses if I have photophobia?

Sunglasses can improve comfort outdoors, but persistent photophobia still needs an explanation.

Is photophobia dangerous?

Not always. Migraine and dry eye are common causes. But severe or sudden photophobia with eye pain, redness or reduced vision can signal a more serious condition.

Should I worry if only one eye hurts in bright light?

A new painful light-sensitive eye, particularly with redness or blurred vision, should be assessed.

Where can I get light sensitivity checked in Abuja?

Blossom Vision Eye Clinic provides comprehensive eye assessment in the Games Village/Kaura District area of Abuja.

Don't Just Turn the Lights Down

Light sensitivity is your symptom.

It is not yet your diagnosis.

The reason may be something manageable such as dry eye.

It may be migraine.

It may be an irritated cornea.

Or occasionally it may be something requiring much quicker treatment.

At Blossom Vision Eye Clinic in Games Village, Abuja, we can examine your eyes and help determine what is making light uncomfortable.

If bright lights have suddenly become painful, or the sensitivity comes with a red eye, significant pain or reduced vision, do not simply hide behind sunglasses. Have your eyes assessed.

Book Appointment