eHealthPedia >

Pink Eye Causes and Risk Factors

MEDICAL ENCYCLOPEDIA 
Pink Eye Causes and Risk Factors
What is pink eye?
Causes and Risk Factors
Symptoms
Diagnosis
Treatment

What causes pink eye?
There are three main categories of conjunctivitis: allergic, infectious and chemical: 

1. Allergic conjunctivitis
Conjunctivitis may be caused by environmental allergens such as pollen and is often seasonal. Allergic Conjunctivitis occurs more commonly among people who are already diagnosed with seasonal allergies when they come into contact with a substance that triggers an allergic reaction in their eyes.

  • Giant papillary conjunctivitis - This type of allergic conjunctivitis caused by the chronic presence of a foreign body in the eye. This condition occurs predominantly with people who wear hard or rigid contact lenses, wear soft contact lenses that are not replaced frequently, have an exposed suture on the surface or the eye, or have a glass eye.

2. Infectious conjunctivitis

  • Viral infection - Viral infections are the most common cause of conjunctivitis. This same virus produces the symptoms of a common cold. Symptoms of conjunctivitis can last from one to two weeks and then will disappear on their own.
  • Bacterial infection - Bacterial infectionss, such as staphylococcus or streptococcus, cause a type of conjunctivitis that produces considerable amounts of pus. Some bacterial infections, however, are more chronic and may produce little or no discharge except for some mild crusting of the eyelashes in the morning.
  • STDs - Sexually transmitted diseases like Chlamydia and Gonorrhea are less common causes of conjunctivitis. 

3. Chemical conjunctivitis
Chemical Conjunctivitis can be caused by irritants like air pollution, chlorine in swimming pools, and exposure to noxious chemicals. Allergic checmical reactions to contact lens products, eye drops, or eye ointments can also cause pink eye.

Pinkeye usually does not affect vision. However, infectious pink eye can easily spread from one person to another. But how do you know if you are exhibiting the signs of pink eye? Do you know the common symptoms of this common eye infection? Learn more about the symptoms of pink eye in the Conjunctivitis Symptoms section that follows.

<< 1 2 3 4 5 >>
Tags: Sexually Transmitted Diseases, allergic conjunctivitis, bacterial infections, conjunctivitis, infections, infectious, discharge, infection, gonorrhea, Allergies, bacterial, symptoms, Diseases, triggers, allergic, amounts, chronic, vision, affect, eyes
Related Topics
Pink Eye Still Contagious?!
paranoidone19  2662 views
Ug.. I Think I Have Pink Eye:(
bd1012  3099 views
Pink Eye
lil_blaze2004  2368 views
Conjunctivitis
zarija  3591 views
allergic conjunctivitis or...?
sairah1508  1060 views
Pink Eye
SaraAnne  3005 views
Sore Throat/pink Eye?
Amor  173311 views
Frequent conjunctivitis
DoctorQuestion  4157 views
Mononucleosis and allergic conjunctivitis
DoctorQuestion  7823 views
Pink eye and the flu
augieviking06  11864 views
Pink Eye
lil_blaze2004  2623 views
Pink Eye...
annieb11  3269 views
conjunctivitis
kerryn  10441 views
Ask a Doctor