WHAT IT IS AND WHY IT HAPPENS:
Conjunctivitis is mostly caused by bacteria you pick up when you come into contact with discharge from the eyes, nose or throat of someone who already has the condition. Or their bacteria can contaminate surfaces, such as a door handle or computer keyboard, and when you touch those surfaces and then rub your eyes, you infect yourself.
“Conjunctivitis is an inflammation of a membrane – the conjunctiva – that covers the white part of the eye,” explains Nguyen.
Common symptoms are redness or pinkness – which is why the condition is also known as ‘pink eye’. Eyes can also be itchy and swollen and have a sticky yellowish or greenish discharge. Symptoms usually develop within a day to three days of being infected and can last for a few days to a few weeks.