Conjunctivitis occurs because of the following reasons –

  • Virus – Often associated with cold or sore throat
  • Bacteria- Poor hand washing and handling infected clothes promotes these microorganisms
  • Allergens - Pollens from trees, dust mites, smoke and dander from animals
  • Chemicalized cosmetics
  • Systematic diseases - people suffering from diseases like Rheumatoid arthritis, Gout, Crohn's disease have a greater possibility of acquiring conjunctivitis.
  • Foreign objects