"Is My Headache From My Eyes?" Eye Causes of Headache, What Glasses Can and Cannot Fix, and Red Flags
Last updated: November 2026
Many patients are sent for an "eye check for headache". Refractive and binocular problems do cause headache, but less often than patients expect; most headaches are tension-type or migraine. The eye examination has two jobs: find and correct genuine eye causes, and pick up the serious conditions that present with headache and eye signs.
Eye causes that glasses or exercises can fix
| Cause | Typical headache | What helps |
|---|---|---|
| Uncorrected hyperopia or astigmatism | Frontal, after reading or screen work, end of day | Full correction (cycloplegic refraction in the young) |
| Presbyopia not corrected or undercorrected | During reading | Reading add at the right working distance |
| Anisometropia or new prescription intolerance | Eyestrain, discomfort with new glasses | Check prescription and centration |
| Convergence insufficiency, accommodative problems, decompensated phoria | Eyestrain and headache with near work | Vision therapy, prisms, plus for near |
| Dry eye and computer vision syndrome | Burning, tired eyes, brow ache | Lubricants, screen breaks, ergonomics |
Small refractive errors (e.g. −0.25 D) rarely explain significant headaches. If correcting a real error does not help in a few weeks, look for another cause.
Serious causes not to miss
| Condition | Clues | Action |
|---|---|---|
| Acute or intermittent angle closure | Brow ache with haloes, blurred vision, red eye, often in the evening or in dim light; hyperopic older patient; narrow angles | Measure IOP, gonioscopy; urgent treatment and laser iridotomy |
| Giant cell arteritis | Over 50, new headache, scalp tenderness, jaw claudication, transient vision loss, raised ESR/CRP, pale disc swelling | Same-day steroids and medical referral; temporal artery biopsy or ultrasound |
| Raised intracranial pressure (tumour, idiopathic intracranial hypertension, venous sinus thrombosis) | Headache worse lying down or on waking, transient visual obscurations, pulsatile tinnitus, sixth nerve palsy, papilloedema | Same-day neuroimaging and neurology referral |
| Optic neuritis | Pain on eye movement, reduced vision and colour, RAPD | Urgent assessment and MRI |
| Pituitary apoplexy | Sudden severe headache, vision loss, ophthalmoplegia | Emergency |
| Carotid dissection | Neck or face pain with a new Horner syndrome | Emergency imaging |
| Third nerve palsy with pupil involvement | Headache, ptosis, dilated pupil | Emergency imaging for aneurysm |
| Uveitis, scleritis, keratitis | Painful red eye, photophobia | Slit lamp; treat the cause |
Headache red flags: new headache after 50; sudden "worst ever" headache; headache with fever, neck stiffness or rash; worse lying down or on straining; with neurological symptoms, papilloedema, double vision or a new pupil abnormality; in pregnancy or immunosuppression; or a clear change in a long-standing pattern.
Migraine and the eye
- Visual aura (zigzag lines, scintillating scotoma) lasting 5–60 minutes, usually before the headache, affects both eyes (homonymous); patients often think it is one eye.
- Aura without headache is common in older adults; a first episode after 50 needs exclusion of TIA.
- Retinal migraine (monocular visual loss) is a diagnosis of exclusion.
- Refer to a physician for prevention; tinted lenses help some patients with light sensitivity.
Eye examination for a headache referral
- Visual acuity, refraction (cycloplegic if young or variable), near point and accommodation.
- Cover test, ocular movements, convergence.
- Pupils (RAPD, anisocoria, Horner).
- IOP and anterior chamber depth; gonioscopy if narrow.
- Dilated fundus for disc swelling or pallor.
- Visual fields by confrontation (and formal fields if any concern).
Pearls
- Always look at the optic discs in a headache referral.
- Evening brow ache with haloes in a hyperope is intermittent angle closure until proved otherwise.
- New headache over 50 with jaw claudication: check ESR/CRP the same day.
Common mistakes
- Prescribing −0.25 D for headache and stopping there.
- Calling bilateral homonymous aura "one-eye" symptoms.
- Missing papilloedema in a young overweight woman with headache (IIH).
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Related: Night Myopia, Pseudomyopia and Other Myopic Shifts: When "More Minus" Is Not True Myopia, Convergence Insufficiency and Convergence Excess: Diagnosis, Treatment and Exercises, Accommodative Anomalies and Vision Therapy: Insufficiency, Excess, Infacility and Spasm, Neuro-Ophthalmology Notes: Topics and Syllabus, Eyelid Twitching (Myokymia) vs Blepharospasm vs Hemifacial Spasm: Reassure, Treat or Investigate?.
Key sources
- Headache Classification Committee of the International Headache Society. ICHD-3. Cephalalgia. 2018;38:1-211
- Do TP, et al. Red and orange flags for secondary headaches in clinical practice: SNNOOP10 list. Neurology. 2019;92:134-144
- Gil-Gouveia R, Martins IP. Headaches associated with refractive errors: myth or reality? Headache. 2002;42:256-262
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