Causes & Risks of Conjunctivitis


You are at risk of developing conjunctivitis if you are exposed to certain allergens such as pollen, smoke and fumes.  Specific environment irritants change with the season and so you may be at more risk at certain times of the year for example when there is a high pollen count.

Conjunctivitis is a very contagious condition and exposure to someone infected with viral or bacterial conjunctivitis can increase risk.  Children often suffer from this condition and should avoid school for at least 24 hours after diagnosis so that it is not passed on to other children.  The bacteria may be spread by a chronic ear infection and passed on from somebody else.  Adults can contract bacterial conjunctivitis from contact as well.

If you wear contact lenses, particularly extended-wear lenses, then you must follow a strict cleaning regime as you may be at increased risk of conjunctivitis.     

In newborn babies, bacteria may be transferred from the mother during delivery through the birth canal.  If there is poor prenatal care, this may increase risk. 

Other causes of conjunctivitis include tear deficiency, eye trauma, history of sinus infections and congestion.

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