The evaluation of allergic conjunctivitis begins with a medical history and physical exam.

Physical findings in those with allergic conjunctivitis may include:

• Eye redness
• Increased eye tearing
• Eye swelling:
• Swelling of the conjunctiva

The diagnosis of allergic conjunctivitis does not require testing.

Tests that may be used to evaluate allergic conjunctivitis include:

• Culture of the tears for bacteria
• Skin testing for allergies