Entropion

Definition:
Entropion involves the turning in of the edges of the eyelid (usually the lower eyelid) so that the lashes rub against the eye surface.It is a medical condition in which the eyelids fold inward. It is very uncomfortable, as the eyelashes rub against the cornea constantly. Entropion is usually caused by genetic factors and may be congenital. Trachoma infection may cause scarring of the inner eyelid, which may cause entropion.

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Causes :

Congenital , Aging , Scarring and Spasm

The most common cause of entropion is a part of the aging process, particularly the tissues supporting the lower eyelid.
Scars within surface of the eyelid resulting from inflammation, chronic infections, or trauma may lead to entropion as well.

Entropion can be a congenital condition. In babies, it rarely causes problems because the lashes are very soft and do not easily damage the cornea. In older people, the condition is usually caused by a spasm and weakening of the muscles surrounding the lower part of the eye, causing the lid to turn inward.

Although rare in North America and Europe, trachoma infection can cause scarring of the inner side of the lid, which may cause entropion. Trachoma scarring is one of the three leading causes of blindness in the world. Risk factors for entropion are aging, chemical burn, or prior infection with trachoma.

Symptoms :

*Excessive tearing

*Eye irritation

*Redness and pain around the eye

*Eye discomfort or pain

*Decreased vision if the cornea is damaged

*Sensitivity to light and wind

*Sagging skin around the eye

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*Decreased vision, especially if the cornea is damaged

Causes:
Congenital , Aging , Scarring and Spasm

Diagnosis:
A physical examination of the eyes and eyelids confirms the diagnosis. Special tests are usually not necessary.

Treatment:
Artificial tears (a lubricant) may provide relief from dryness and keep the cornea lubricated. Surgery to correct the position of the eyelids is usually effective.

Severe cases with corneal ulcer may require surgery to move conjunctiva over the cornea to protect the eye from perforation.

Prognosis:
The probable outcome is good if treated before cornea damage occurs.

Possible Complications:
Corneal dryness and irritation may predispose the eye to infections or corneal abrasions or corneal ulcers

When to Contact yuor health care provider?:
Call for an appointment with your health care provider if eyelids turn inward, or if there is a persistent sensation of a foreign body in the eye. Rapidly increasing redness, pain, light sensitivity, or decreasing vision should be considered an emergency in a person with entropion.

Prevention :
Most cases are not preventable. Treatment reduces the risk of complications.
Persons who have recently traveled to an area with trachoma present (North Africa, South Asia) should seek treatment if they have red eyes.

Entropion in dogs:-
Canine entropion has been documented in most dog breeds, although there are some breeds (particularly purebreds) that are more commonly affected than others. These include the Akita, Pug, Chow Chow, Shar Pei, St. Bernard, Cocker Spaniel, Boxer, Springer Spaniel, Labrador Retriever, Cavalier King Charles Spaniel, Bull Mastiff, Great Dane, Irish Setter, Poodle and particularly Bloodhound . The condition is usually present by six months of age. Entropion can also occur secondary to pain in the eye, scarring of the eyelid, or nerve damage. The upper or lower eyelid can be involved, and one or both eyes may be affected. When entropion occurs in both eyes, this is known as “bilateral entropion.”

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Canine entropion

Upper lid entropion involves the eyelashes rubbing on the eye, but the lower lid usually has no eyelashes, so hair rubs on the eye. Surgical correction is used in more severe cases. A strip of skin and orbicularis oculi muscle are removed parallel to the affected portion of the lid and then the skin is sutured. Shar Peis, who often are affected as young as two or three weeks old, respond well to temporary eyelid tacking. The entropion is often corrected after three to four weeks, and the sutures are removed.

Disclaimer: This information is not meant to be a substitute for professional medical advise or help. It is always best to consult with a Physician about serious health concerns. This information is in no way intended to diagnose or prescribe remedies.This is purely for educational purpose.

Resources:
http://www.nlm.nih.gov/medlineplus/ency/article/001008.htm
http://en.wikipedia.org/wiki/Entropion

http://www.stpeter-eye.com/dis_entropion.htm

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