(uncomfortable not usually classified as painful)

Etiology/risk factors:

• Bacterial conjunctivitis: gonorrhea, chlamydia tranchomatis, s. aureus, H. infulenzae
• Viral: Adenoviruses, HSV, VZV
• Chemical conjunctivitis: Exposure to silver nitrate
• Allergic conjunctivitis: allergic reaction
• Autoimmune: ocular cicatricial pemphigoid (OCP)

Clinical Features:

• Red eye
• Discharge and crust formation
  • Bacterial: thick purulent discharge
  • Viral: clear, watery discharge
• Chemosis
• Burning or gritty sensation
• Photophobia
• Itching (most intense in allergic conjunctivitis).
• Blurry vision in bacterial conjunctivitis. Risk of blindness if untreated