Viral pink eye

Viral pink eye is often caused by an adenovirus, which is a common respiratory virus that can also cause a sore throat or upper respiratory infection. The herpes virus can also cause viral pink eye.

Symptoms of viral pink eye include:

• Redness in the white of the eye.
• Swelling of the eyelids.
• Itching or burning feeling of the eyelids.
• Swollen and tender areas in front of the ears.
• A lot of tearing.
• Clear or slightly thick, whitish drainage.

Viral pink eye symptoms usually last 5 to 7 days but may last up to 3 weeks and can become ongoing or chronic.

Pink eye may be more serious if you:

• Have a condition that decreases your body’s ability to fight infection (impaired immune system).
• Have vision in only one eye.
• Wear contact lenses.

If the pink eye is caused by a virus, the person can usually return to daycare, school, or work when symptoms begin to improve, typically in 3 to 5 days. Medicines are not usually used to treat viral pink eye, so it is important to prevent the spread of the infection. Pink eye caused by a herpes virus, which is rare, can be treated with an antiviral medicine. Home treatment of viral pink eye symptoms can help you feel more comfortable while the infection goes away.

Bacterial pink eye

An infection may develop when bacteria enter the eye or the area around the eye. Some common infections that cause pink eye include:

• Staph infection.
• Haemophilus influenzae type b (Hib).
• Cat-scratch disease.
• Gonorrhea.

Symptoms of bacterial pink eye include:

• Redness in the white of the eye.
• Gray or yellow drainage from the eye. This drainage may cause the eyelashes to stick together.
• Mild pain.
• Swelling of the upper eyelid, which may make the lid appear to droop (pseudoptosis).

Bacterial pink eye may cause more drainage than viral pink eye. Bacterial infections usually last 7 to 10 days without antibiotic treatment and 2 to 4 days with antibiotic treatment. The person can usually return to daycare, school, or work 24 hours after an antibiotic has been started if symptoms have improved. Prescription antibiotic treatment usually kills the bacteria that cause pink eye.