Pink eye (conjunctivitis) is an inflammation or infection of the transparent membrane (conjunctiva) that lines your eyelid and covers the white part of your eyeball. When small blood vessels in the conjunctiva become inflamed, they're more visible. This is what causes the whites of your eyes to appear reddish or pink.
Pink eye is commonly caused by a bacterial or viral infection, an allergic reaction, or â in babies â an incompletely opened tear duct.
Though pink eye can be irritating, it rarely affects your vision. Treatments can help ease the discomfort of pink eye. Because pink eye can be contagious, early diagnosis and treatment can help limit its spread.
Source: http://www.mayoclinic.com
The most common pink eye symptoms include:
There are serious eye conditions that can cause eye redness. These conditions may cause eye pain, a feeling that something is stuck in your eye (foreign body sensation), blurred vision and light sensitivity. If you experience these symptoms, seek urgent care.
Make an appointment with your doctor if you notice any signs or symptoms you think might be pink eye. Pink eye can be highly contagious for as long as two weeks after signs and symptoms begin. Early diagnosis and treatment can protect people around you from getting pink eye too.
People who wear contact lenses need to stop wearing their contacts as soon as pink eye symptoms begin. If your symptoms don't start to get better within 12 to 24 hours, make an appointment with your eye doctor to make sure you don't have a more serious eye infection related to contact lens use.
Source: http://www.mayoclinic.com
Causes of pink eye include:
Most cases of pink eye are caused by a virus.
Both viral and bacterial conjunctivitis can occur along with colds or symptoms of a respiratory infection, such as a sore throat. Wearing contact lenses that aren't cleaned properly or aren't your own can cause bacterial conjunctivitis.
Both types are very contagious. They are spread through direct or indirect contact with the liquid that drains from the eye of someone who's infected. One or both eyes may be affected.
Allergic conjunctivitis affects both eyes and is a response to an allergy-causing substance such as pollen. In response to allergens, your body produces an antibody called immunoglobulin E (IgE). This antibody triggers special cells called mast cells in the mucous lining of your eyes and airways to release inflammatory substances, including histamines. Your body's release of histamine can produce a number of allergy signs and symptoms, including red or pink eyes.
If you have allergic conjunctivitis, you may experience intense itching, tearing and inflammation of the eyes â as well as sneezing and watery nasal discharge. Most allergic conjunctivitis can be controlled with allergy eyedrops.
Irritation from a chemical splash or foreign object in your eye is also associated with conjunctivitis. Sometimes flushing and cleaning the eye to rid it of the chemical or object causes redness and irritation. Signs and symptoms, which may include watery eyes and a mucous discharge, usually clear up on their own within about a day.
Source: http://www.mayoclinic.com
In most cases, your doctor can diagnose pink eye by asking questions about your symptoms and recent health history and performing a physical examination of your eyes.
Rarely, your doctor may also take a sample of the liquid that drains from your eye for laboratory analysis (culture). A culture may be needed if your symptoms are severe or if your doctor suspects a high-risk cause, such as a foreign body in your eye, a serious bacterial infection or a sexually transmitted infection.
Source: http://www.mayoclinic.com
In both children and adults, pink eye can cause inflammation in the cornea that can affect vision. Prompt evaluation and treatment by your doctor can reduce the risk of complications.
Source: http://www.mayoclinic.com
Practice good hygiene to control the spread of pink eye. For instance:
The safest way to prevent spreading pink eye is to stay home â or keep your child at home â until eye discharge has stopped. Most schools and child care facilities require that your child wait at least 24 hours after starting treatment before returning to school or child care. Check with your doctor if you have any questions about when your child can return to school or child care.
Keep in mind that pink eye is no more contagious than the common cold. It's okay to return to work, school or child care if you're not able to take time off â just stay consistent in practicing good hygiene.
Newborns' eyes are susceptible to bacteria normally present in the mother's birth canal. These bacteria cause no symptoms in the mother. In rare cases, these bacteria can cause infants to develop a serious form of conjunctivitis known as ophthalmia neonatorum, which needs treatment without delay to preserve sight. That's why shortly after birth, an antibiotic ointment is applied to every newborn's eyes. The ointment helps prevent eye infection.
Source: http://www.mayoclinic.com
To help you cope with the signs and symptoms of pink eye until it goes away, try to:
Source: http://www.mayoclinic.com
Risk factors for pink eye include:
Source: http://www.mayoclinic.com
We respect your privacy and aim for the best website experience in compliance with local laws. Allowing cookies enables a tailored experience, while disabling them may reduce personalization. For more information, please read our Privacy Policy and Cookie Policy.