What should you know about severe pink eye?

Pink eye, also called conjunctivitis, is inflammation of the clear surface covering the white of the eye and inner eyelids. It may cause a red or gritty eye, watering, crusting, and [Eye Discharge](/symptoms/eye-discharge/). Viral or bacterial infection, allergy, irritation, or a foreign body can contribute. Severe symptoms deserve attention because corneal inflammation and other eye conditions can resemble conjunctivitis. [Light Sensitivity](/symptoms/light-sensitivity/) or reduced vision is especially different from simple irritation. Symptoms in one eye can spread to the other, and shared towels, cosmetics, and hand contact can pass infection between people.

Arrange a [GP Consultation](/treatments/consultations-and-assessment/gp-consultation/) or eye assessment, particularly if symptoms are worsening, contact lenses are involved, or the eye is painful. Wash hands before and after touching the face, avoid rubbing, pause contact lens use, and do not share towels or eye makeup. Clean discharge gently with clean water and a fresh pad each time. Do not use leftover drops; an assessment can determine whether [Antibiotic Treatment](/treatments/medical-management/antibiotic-treatment/) is appropriate.

Seek urgent eye care for severe pain, new vision change, pronounced [Light Sensitivity](/symptoms/light-sensitivity/), injury, chemical exposure, a very swollen eyelid, or a red eye with headache and nausea. Get prompt advice if an infant is affected, if symptoms are rapidly worsening, or if you wear contact lenses. A mild [Red Eye](/symptoms/red-eye/) may settle, but severity and associated symptoms determine urgency.

Ask whether the cornea is involved, whether the cause appears infectious or allergic, how long to avoid contact lenses, and which warning signs should prompt an emergency review. Also ask how to clean discharge safely and whether household contacts need precautions.