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Red
eye is the presentation of inflammation, which is the natural
reaction of the body tissues to infection, allergic reactions,
physical trauma and burns. Characteristics symptoms of inflammation
are redness, swelling & pain. Due to intimate relationship
between the lid margin and the ocular surface; pathologies
affecting the eyelids are common causes of red eye.
Blepharitis
Generalized
inflammation of the eyelid margins, with symptomatic redness,
itching and discharge. It tends to be very persistent and
may cause the eyelashes to fall out or to turn inwards so
they irritate the cornea. Although the symptoms are uncomfortable,
the condition usually is not serious. Blepharitis is probably
the single most common cause of all eye discomfort.
Ectropion
& Entropion
Ectropion
is eversion (turning out) of the eyelid. It can lead to poor
tear drainage and excessive exposure of the cornea due to
incomplete lid closure. Infection and damage to the cornea
are more likely to occur.
Entropion is inversion (turning out) of the eyelids so that
the eyelashes rub against the cornea. This can irritate the
cornea and make it more susceptible to infection. Eyelid abnormalities
that may encourage the development of other eye infections,
such as conjunctivitis and Keratitis. They are not infectious
conditions on their own.
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