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Ectropion is a condition which describes the margin of the eyelid rolling outward, resulting in exposure of the sensitive tissue (conjunctiva) lining the inside of the eyelid. Exposure and poor tear distribution may predispose the patient to sight-threatening corneal disease.
It occurs most commonly in dogs but is rarely seen in cats.
Protrusion of the lower eyelid — with lack of contact of the lower lid to the eye globe, and exposure of the palpebral (eyelid) conjunctiva and the third eyelid — can usually be plainly seen. Other signs and symptoms include:
Ectroprion in cats is usually secondary to breed-associated alterations in facial conformation and eyelid support. The condition is seen more frequently in Persians and Himalayans. Other possible causes include:
A thorough eye exam will be conducted to look for evidence of the eyelid malformation and for corneal ulcerations. A fluorescein stain, a non-invasive dye that shows details of the eye under blue light, will be used to examine the eye for abrasions or foreign objects. In cats with late-age onset, an underlying disorder will be considered as a causative factor. Nerve paralysis in the eye, a condition associated with lack of muscle tone of the eye muscles, will be considered.
Anything pertaining to the lid of the eye
Anything having to do with the eye
Turning in of the eyelids
A passage in the body with walls
Any growth or organ on an animal that is not normal