Ectropion and Entropion

Definitions:

Ectropion:If the lower eyelid turns outwards, it starts to hang away from the eyeball and forms a small bucket or pocket.

This may not cause any problems. But as tears collect, the bucket overflows and the lower eyes may water constantly.

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In contrast, the middle part of the eyeball becomes exposed, dry and irritated, which may allow recurrent infections to occur.

When ectropion is due to ageing, usually both eyes are affected. If only one is affected, this may be the result of scarring on the eyelid or upper cheek. As this scar heals and tightens it tugs at the lower eyelid, pulling it down.

Ectropion can also occur when the nerve supplying the lower eyelid muscle has been damaged, causing the muscle to be paralysed.
Ectropion is also found in dogs as a genetic disorder in certain breeds.

Causes:
*Congenital
*Aging
*Scarring
*Mechanical
*Allergic
*Facial nerve palsy
*Anti-cancer treatments such as erlotinib, cetuximab, and panitumumab, which block the function of EGFR (the epidermal growth factor receptor).

Ectropion in dogs:…. CLICK & SEE
Ectropion in dogs usually involves the lower eyelid. Often the condition has no symptoms, but tearing and conjunctivitis may be seen. Breeds associated with ectropion include the Cocker Spaniel, the Saint Bernard, the Bloodhound, and the Basset Hound. It can also result from trauma or nerve damage. Treatment (surgery) is only recommended if there is chronic conjunctivitis or if there is corneal damage. A small part of the affected lid is removed and then the lid is sewn back together.

 

Entropion :When the upper, lower or both eyelids turn inwards, the eyelashes can rub against the eyeball. This irritates the eye, which can feel painful and watery. Damage to the cornea, the clear front part of the eye, may cause an ulcer to develop that can lead to loss of vision if not treated.
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Entropion usually occurs as a consequence of the ageing process. In developing countries, however, infection affecting the inner surface of the eyelid is a relatively common cause. When this heals, it can leave scar tissue that pulls the outer border of the eyelid inwards.

In a condition called trichiasis, the eyelashes grow inwards, causing identical problems to entropion.

 

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Symptoms:
*Redness and pain around the eye
*Sensitivity to light and wind
*Sagging skin around the eye
*Excessive tearing
*Decreased vision, especially if the cornea is damaged

Causes:
*Congenital
*Aging
*Scarring
*Spasm

 

Entropion in dogs……..CLICK & SEE
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, Neapolitan Mastiff, Bull Mastiff, Great Dane, Irish Setter, Shiba Inu , Rottweiler, 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.”

Upper lid entropion involves the eyelashes rubbing on the eye, but the lower lid usually has no eyelashes, so little or no 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.

 

Treatment:
Daily eye cleansing with boiled water that’s been allowed to cool, or with an eye wash solution from the pharmacist, can help to keep the eye clean and soothe any symptoms of irritation and soreness. Any infection can be easily treated with antibiotic drops or ointment.

It’s possible to have a minor operation on the eyelid to tighten the skin and muscles. The sooner this is done the better, to avoid further damage to the eye. You may be advised to tape the eye closed to protect it until surgery is performed.

The operation is usually done as a day case under local anaesthetic.

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://en.wikipedia.org/wiki/Ectropion
http://en.wikipedia.org/wiki/Entropion
http://www.bbc.co.uk/health/physical_health/conditions/entropion1.shtml
http://www.cosmeticeyelids.com/wea-gallery_ectropion.htm
http://www.eyeplasticsurgery.net/patientinfo/entropion.html

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