1. Viral pink eye:
Adenoviruses are the type of virus that are most commonly responsible for the infection.
Its symptoms include viral “cold-like” symptoms, such as sinus congestion and runny nose, are also present.
The eyelids may be swollen. Sometimes looking at bright lights is painful.
2. Bacterial pink eye:
Staphylococci and Streptococci, among others, are types of bacteria that commonly cause pink eye.
Its symptoms are: eye pain, swelling, itching, redness, a moderate to large amount of discharge, usually thick and yellow or greenish in color, swelling of the lymph nodes in front of the ears.
3. Chlamydia pink eye:
Pink eye due to infection with chlamydia is an uncommon form of bacterial pink eye in the U.S., but it is very common in Africa and Middle Eastern countries.