Causes of Red Eyes
Most people have experienced red eyes at one time or another. They are very common and may be caused by a number of different factors. Although common, people who experience chronic red eyes should seek the advice from a medical professional.
Redness of the eyes is commonly caused by an allergic reaction. Cosmetics, eye drops, and make-up removers can all cause allergic reactions and subsequent redness of the eyes. Avoidance of the offending allergen is generally effective in reducing symptoms, however, severe cases may require medical intervention.
Illnesses such as upper respiratory infections can cause the eyes to redden. Conjunctivitis is also a common cause of eye redness and irritation. In addition to redness, conjunctivitis can cause pain, itching, and eye discharge. People who have conjunctivitis often complain of a “foreign body” sensation in the eye or complain of grittiness. Fevers can also cause redness and tearing of the eyes, as can eye diseases such as glaucoma. Although mild cases of glaucoma generally do not cause redness of the eyes, acute-angle closure glaucoma can cause redness and severe pain.
Irritating chemicals can cause pain, redness and tearing of the eyes. People working around chemicals should wear protective eyewear to avoid eye redness and accidental splashes and exposures.
Eye irritation and subsequent redness can also be attributed to wearing contact lenses, eye strain, too much time spend in front of a computer screen, and fatigue. When eye redness becomes chronic or is accompanied by pain or discharge, a health care provider should be consulted.