Acute Viral Conjunctivitis (Pink Eye)
Acute Infectious Conjunctival Inflammation
Primary risk age: Preschool and School-age Children
- Urgency
- Mild
- Typical age
- Preschool and School-age Children
- Body system
- Ophthalmological System
Typical course: 7 to 14 days.
Reviewed against AAP · CDC · WHO · NHS guidance Last reviewed 2026-06-13
1. Summary & Pathophysiology
Acute Infectious Conjunctival Inflammation
Pathophysiology (Development Path)
Direct inoculation of the conjunctiva by viral particles leads to cellular infection, causing conjunctival hyperemia (dilation of blood vessels) and chemosis (swelling), resulting in the classic pink or red appearance.
Primary Causes & Etiology
Adenovirus (highly contagious). Often associated with common cold or upper respiratory symptoms.
2. Symptom Continuum
- Early Onset Signs
Mild foreign body sensation or grittiness in one eye, mild redness, and watery discharge.
- Progressive Phase
Bilateral eye involvement, burning sensation, swollen eyelids, and significant watery or serous discharge.
- Severe Indicators
Photophobia, severe eyelid swelling, pseudomembrane formation over the conjunctiva, and corneal involvement (keratitis) causing blurred vision.
3. Clinical Verification
Clinical evaluation. Conjunctival swab or PCR only in severe or atypical cases.
4. Care & Elements Plan
Primary Care Treatment Plan
Cold compresses and artificial tears for comfort. Viral conjunctivitis is self-limiting and does not respond to antibiotic drops. Practice strict hygiene to prevent transmission.
Home Support Elements
Use a clean, damp cloth to gently wipe away crusting. Wash hands frequently. Keep the child home from school until eye discharge is gone.
Generic Active Ingredients (No Brands)
- Lubricating eye drops (artificial tears)
- Cold compresses.
Lists active elements only. Never administer self-designed therapies.
5. Doctor Critical Lines
Critical Thresholds: When to See a Doctor
Consult if the child has severe eye pain, changes in vision, extreme sensitivity to light, or if the discharge becomes thick and green/yellow.
6. Vaccine & Prevention
Routine Prophylaxis (Prevention)
Strict hand hygiene, avoid touching or rubbing the eyes, and wash towels and pillowcases frequently.
Immunization Context
Not applicable.
7. Timelines & Outlook
Active Timeline
7 to 14 days.
Expected Prognosis
Excellent. Most cases resolve spontaneously without any long-term visual impairment.
Potential Untreated Complications
Epidemic keratoconjunctivitis (corneal infiltrates), secondary bacterial infection, and localized transmission.
More in Infectious & Inflammatory Ocular Disorders
Emergency Ophthalmia Neonatorum (Neonatal Conjunctivitis)
Acute Neonatal Hyper-purulent Ocular Infection
Neonates (Presents in the first 28 days of life)
Moderate Pediatric Dacryocystitis
Infection & Inflammation of the Lacrimal Sac
Infants and young children (Often associated with a persistent dacryocystobin obstruction/blocked tear duct)