One or both eyes are red
Eye feels irritated, gritty, or scratchy
Increased tearing
Thick or yellow-green discharge that may crust the eyelids shut
Watery discharge with mild redness and irritation
Swelling of the eyelids
Light sensitivity
Itching (more common with allergic causes)
Symptoms started after exposure to someone with conjunctivitis
Recent cold or upper respiratory symptoms
Contact lens wearer with redness or discomfort
Pain in the eye (especially moderate to severe)
Blurred vision or decreased vision
Severe light sensitivity
You wear contact lenses and have redness or discharge
Symptoms are in only one eye but quickly spread to the other
No improvement or worsening after 24 to 48 hours
Fever or significant swelling around the eye