"The primary symptom of pink eye is an eye that has a pink appearance. Other symptoms of pink eye depend on the type of conjunctivitis:
Viral conjunctivitis symptoms include watery, itchy eyes or sensitivity to light. One or both eyes can be affected. Viral conjunctivitis is highly contagious and can be spread by coughing and sneezing.
Bacterial conjunctivitis symptoms include a sticky, yellow or greenish-yellow eye discharge in the corner of the eye. In some cases, this discharge can be severe enough to cause the eyelids to be stuck together when you wake up. One or both eyes can be affected. Bacterial conjunctivitis is contagious, usually by direct contact with infected hands or items that have touched the eye.
Allergic conjunctivitis symptoms include watery, burning, itchy eyes and are often accompanied by stuffiness and a runny nose, and sensitivity to light. Allergic conjunctivitis affects both eyes, but this type of pink eye is not contagious.
Conditions associated with conjunctivitis include dry eyes. Also, bacterial conjunctivitis sometimes can lead to very serious eye problems potentially causing permanent vision loss. For these reasons, anytime you develop red, irritated eyes, you should call an eye doctor immediately and schedule an eye exam."
Source - All About Vision