DDx ⬇
- Migraine
- Corneal abrasion
- Meningitis or encephalitis
- Uveitis
- Acute glaucoma
- Viral or bacterial conjunctivitis
- Keratitis (corneal ulcer or inflammation), eg, herpes simplex
- Systemic viral infection, eg, measles
- Severe dry eyes
- Ultraviolet (actinic) keratitis
- Aphakia (absence of lens)
- Albinism
- Eyestrain from refractive error
- Optic neuritis
Related DDx ⬆