Usually complications are rare in simple adult Conjunctivitis. But sometimes if not treated in its early stages can result in
- Corneal ulcers, especially in those individual who wear contact lens
- Otitis media is seen in 25% of children with H. influenzae conjunctivitis
- Pneumonia in 10-20% of infants following chlamydial infection (Chlamydia is a common fungus that can cause a variety of complaints)