The evaluation of bacterial conjunctivitis begins with a medical history and physical examination, including an eye exam.

Physical findings in someone with bacterial conjunctivitis include:

• Red eyes
• Colored eye discharge
• Red throat
• Swollen lymph glands in the neck

Usually, testing is not required to make the diagnosis of bacterial conjunctivitis.

Tests that may be used to evaluate bacterial conjunctivitis include:

• Allergy testing
• Complete blood count
• Culture of eye discharge