Quick Answer: When Is This an Emergency?

Sudden, severe eye pain with headache, blurred vision, halos around lights, and nausea or vomiting can signal acute angle-closure glaucoma, a sight-threatening emergency requiring same-day treatment. Most other causes of headache eye pain, such as eye strain, dry eye, or migraine, are not emergencies but still deserve evaluation if they are frequent or worsening.

Headache and Eye Disease in Korea: Key Statistics

• ▸ Migraine affects an estimated 15–20% of Korean adults, with women affected roughly two to three times more often than men.
• ▸ Korean and other East Asian populations tend to have anatomically narrower anterior chamber angles, raising the population risk of acute angle-closure glaucoma compared to Western populations.
• ▸ Glaucoma remains one of the leading causes of irreversible blindness in Korea, and is frequently symptom-free until significant damage has occurred.
• ▸ Prompt pressure-lowering treatment during an acute angle-closure attack preserves vision in the large majority of cases when given within hours of onset.

Q. ER or eye doctor — which one first?

• Go to the emergency room or an emergency ophthalmology clinic immediately if you have severe eye pain with vomiting, halos around lights, or a hard red eye
• Seek a same-day eye exam for sudden vision changes, even without severe pain
• Schedule a prompt visit within a few days for recurring headaches linked to screen use, reading, or known dry eye

When in doubt, especially with sudden or severe symptoms, treat it as urgent and seek care the same day.

Q. Can eye strain from screens cause headaches?

Yes. Prolonged screen use reduces blink rate, causing dry eye and ciliary muscle fatigue that commonly produces a dull ache around or behind the eyes, often radiating to the temples or forehead. This is especially common among office workers in Yeongdeungpo and Gasan who spend long hours in front of monitors, and it is usually relieved with breaks, corrected refractive error, and dry eye treatment.

Q. What is acute angle-closure glaucoma and why is it more common in Korea?

Acute angle-closure glaucoma occurs when the drainage angle of the eye suddenly closes, causing eye pressure to spike rapidly. It produces severe eye pain, headache, blurred vision with halos around lights, and often nausea or vomiting. Korean and other East Asian populations tend to have anatomically shallower anterior chambers and narrower angles, which raises the population risk compared to Western populations, making awareness of this condition especially important for patients in Seoul.

Q. How can I tell if my headache is from my eyes or a migraine?

Eye-related headaches typically worsen with visual tasks and improve with rest or closing the eyes, while migraines often involve throbbing pain, light and sound sensitivity, and sometimes a visual aura before the headache begins. Because the two can overlap, an eye exam that rules out an ocular cause is a reasonable first step before pursuing neurology evaluation.

Q. Does uncorrected refractive error cause headaches?

Yes. Uncorrected nearsightedness, farsightedness, or astigmatism forces the eye muscles to work harder to maintain focus, which frequently causes frontal headaches, especially after reading or screen work. An updated glasses or contact lens prescription resolves this type of headache in most patients.

Q. Is sinus-related eye pain dangerous?

Sinus infections can cause pain around and behind the eyes that mimics an ocular problem, particularly with sinusitis affecting the frontal or ethmoid sinuses near the orbit. While usually not vision-threatening, severe or worsening sinus-related eye symptoms, especially with swelling or vision changes, should be evaluated promptly to rule out orbital complications.

Q. What tests will the eye doctor perform?

A workup for headache with eye pain typically includes tonometry to measure eye pressure, a dilated fundus exam, gonioscopy to assess the drainage angle, OCT imaging of the optic nerve, and a visual field test when glaucoma or optic nerve disease is suspected. Most of these tests are completed in a single visit.

Q. Should expats in Seoul worry about this condition?

Anyone experiencing sudden, severe eye pain with headache, especially with nausea, vomiting, or halos around lights, should seek same-day evaluation regardless of nationality. Nunehim Eye Center provides consultations in Korean and English for patients throughout Yeongdeungpo, Guro, Gasan, and Gwanak, so language should never be a barrier to prompt care.

📍 Visit Nunehim Eye Center — Guro, Seoul

Convenient access from Guro, Gasan, Gwanak & Dongjak. Near Guro Digital Complex Station (Line 2).