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Ectropion

Weakness or deformity of the lower eyelid causing it to turn outwards

Field	Value
name	Ectropion
image	Cycatricial ectropion - eyes open.jpeg
caption	Cycatricial ectropion of lower lids caused by burns of the eyelids and face – eyes open

Ectropion is a medical condition in which the lower eyelid turns outwards. It is one of the notable aspects of newborns exhibiting congenital harlequin-type ichthyosis, but ectropion can occur due to any weakening of tissue of the lower eyelid. The condition can be repaired surgically. Ectropion is also found in dogs as an inherited, developmental condition.

Causes

The following are the 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).

In dogs

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 Saint Bernard, the Bloodhound, the Clumber Spaniel, Newfoundlands, and the Neapolitan Mastiff. It can also result from trauma or nerve damage. Treatment (surgery) is recommended only 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.

References

"Ectropion". National Human Genome Research Institute.
Gelatt, Kirk N.. (2007). "Veterinary Ophthalmology". [[Blackwell Publishing]].
Gelatt, Kirk N.. (2000). "Essentials of Veterinary Ophthalmology". [[Lippincott Williams & Wilkins]].

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

dog-diseases disorders-of-eyelid,-lacrimal-system-and-orbit congenital-disorders-of-eyes

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