Pink eye also known as conjunctivitis is in two different forms.
1. Infectious Conjunctivitis
2. Allergic Conjunctivitis
Even though there some other eye conditions that can cause a form of “pink eye” not related with any of these two primary types of conjunctivitis. An of one of these conditions can be Glaucoma. The increase in pressure in the eye can cause the white of the eyes to turn pink. So in doubt, go check with your eye doctor.