Many things can cause “pink/red eyes”, so it is important to determine the cause before you start to treat your affected eye. Some causes are infectious while other could be inflammatory or due to trauma.
The most common infection we see is conjunctivitis caused by an adenovirus (the common cold). There are other types of bacteria and viruses that can cause eye infections. Fungal infections are also seen, though they are not as common.
Underlying systemic health problems can also cause a red eye. In these cases, it is extremely important to inform your primary care provider and attain any additional testing deemed necessary.