Sticky, red, or watery eyes are among the most common reasons parents seek advice about a young child's health. Conjunctivitis is very common and is usually a benign, self-limiting condition — but the sight of a baby or toddler with a crusted, pink, and weeping eye is alarming and parents rightly want to know whether treatment is needed and what to do.
Healthbooq supports parents with practical guidance on common eye conditions in young children, including conjunctivitis, and when to seek medical assessment versus managing at home.
Types of Conjunctivitis
Viral conjunctivitis is the most common type in children and is typically associated with an upper respiratory infection (cold). It causes redness, watering, and a clear or mucoid (not thick pus-like) discharge, often starting in one eye and spreading to the other. It is highly contagious. It is self-limiting and resolves without treatment in one to two weeks. Antibiotics have no role in viral conjunctivitis.
Bacterial conjunctivitis produces a more pronounced purulent (yellow-green pus-like) discharge that causes the eyelids to stick together, particularly in the morning. It may affect one or both eyes. Common causative bacteria include Staphylococcus aureus, Streptococcus pneumoniae, and Haemophilus influenzae. Antibiotic eye drops or ointment (such as chloramphenicol 0.5%, available over the counter for children over two years) reduce the duration of infection and limit spread. However, evidence shows that mild bacterial conjunctivitis in otherwise healthy children over two years resolves within one to two weeks without treatment in most cases; watchful waiting is therefore reasonable for mild, uncomplicated cases.
Allergic conjunctivitis causes bilateral red, itchy, watery eyes, often in association with other allergic symptoms (sneezing, nasal congestion, skin reactions). It is not infective and not contagious. It is associated with hayfever (allergic rhinitis) and atopic conditions. Treatment includes antihistamine eye drops, oral antihistamines, and sodium cromoglicate eye drops.
Newborn Conjunctivitis: Ophthalmia Neonatorum
Conjunctivitis in the first twenty-eight days of life (ophthalmia neonatorum) is a different and more serious presentation that requires prompt medical assessment. In newborns, conjunctivitis can be caused by Neisseria gonorrhoeae (gonococcal — presents in the first few days of life) or Chlamydia trachomatis (chlamydial — presents one to two weeks after birth), both of which are transmitted during delivery from infected maternal secretions. These infections require systemic antibiotic treatment and can cause severe ocular damage if untreated. Any conjunctivitis in a baby under four weeks should be assessed urgently.
Practical Management
Regardless of the type of conjunctivitis, gentle cleaning of the eyelids is helpful — using a clean cotton wool pad soaked in sterile saline (or cool boiled water) to wipe from the inner corner of the eye outward, using a fresh piece of cotton wool for each wipe. This removes discharge and reduces discomfort.
Children with infective conjunctivitis should not attend nursery, school, or childcare until the discharge has cleared (UKHSA guidance). Hands should be washed frequently. Towels and flannels should not be shared.
A GP visit is warranted for: conjunctivitis in babies under four weeks; severe or worsening symptoms; conjunctivitis associated with significant eyelid swelling (preseptal cellulitis — a potentially serious infection requiring urgent assessment); photophobia or visual disturbance; or failure to improve with antibiotic treatment after forty-eight hours.
Key Takeaways
Conjunctivitis — inflammation of the conjunctiva (the membrane covering the white of the eye and lining the eyelids) — is common in young children and can be caused by viral infection, bacterial infection, or allergic reaction. Most conjunctivitis in children is viral and self-limiting, requiring no antibiotic treatment. Bacterial conjunctivitis typically produces more pronounced purulent (pus-like) discharge and may benefit from antibiotic eye drops, though the evidence for treating mild bacterial conjunctivitis with antibiotics versus watchful waiting is not strongly in favour of antibiotics in most cases. Newborn conjunctivitis requires prompt medical assessment because of the possibility of more serious causes.
