13th February 2025

A 39-year-old lady presents with bilateral eye irritation and sticky purulent discharge.

A 39-year-old lady presents with bilateral eye irritation and sticky purulent discharge. She tells you that her daughter also had this a week ago and was given some ointment which helped. She is well in herself, with no fevers. On examination, visual acuity is normal. Slit lamp examination reveals mild conjunctival injection and purulent discharge but there are no cells in the anterior chamber and the fundus appears normal. 

What is the most likely responsible pathogen? 

Select the SINGLE most appropriate option from the list below. Select ONE option only.