Entropion

[NL.]
(Med.) Same as Entropium.

The inversion, or infolding, of the eyelid margin.

1. The inversion or turning inward of a part.
2. The infolding of the margin of an eyelid.

Inversion, or the turning inward, as of the margin of an eyelid. Causes irritation, blepharospasm, keratitis. May be congenital or acquired.

• anatomic e. — see conformational entropion (below).
• cicatricial e. — caused by scarring of the eyelid or conjunctiva following injury or inflammation.
• conformational e. — a conformational feature of some dog breeds, including Shar peis, Chow Chows, and St. Bernards, which either have excessive and thick skin on the face, or deeply set eyes. Called also anatomic entropion.
• geriatric e. — occurs in older dogs because of temporal muscle atrophy, loss of retrobulbar tissue or general debilitation.
• inherited congenital e. — occurs in sheep, cattle, miniature pigs and some breeds of dogs.
• lateral e. — affects the lateral part of the eyelids. Involvement of both upper and lower eyelids may be caused by inadequate function of the retractor anguli oculi muscle.
• medial e. — seen most often in brachycephalic dogs.
• neonatal e. — seen in Shar pei puppies, because of their thick skin and enophthalmos. Temporary surgical correction is required at an early age. Newborn lambs, calves and goats may also be affected.
• spastic e. — due to spasticity of the orbicularis oculi muscle caused by painful conditions of the eye, such as ulcerative keratitis, distichiasis or foreign bodies.
• uveal e., e. uveae — infolding of the pupillary border and adherence to the anterior surface of the iris.

Entropion
Classification and external resources
Entropion and trichiasis secondary to trachoma
ICD-10	H02.0, Q10.2
ICD-9	374.0
DiseasesDB	29643
MedlinePlus	001008
eMedicine	oph/212
MeSH	[1]

Entropion 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.

Contents 1 Symptoms 2 Treatment 3 Causes 4 Entropion in dogs 5 See also 6 References 7 External links

Symptoms

Symptoms of entropion include:

• 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

Treatment

Treatment is a simple surgery in which excess skin of the outer lids is removed. Prognosis is excellent if surgery is performed before the cornea is damaged.

Causes

• Congenital
• Aging
• Scarring
• Spasm

Entropion in dogs

Canine entropion

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, Rottweiler, Poodle^[1] and particularly Bloodhound.^[2] 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 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.^[1]

See also

• Ectropion
• List of eye diseases and disorders

References

1. ^ ^{a b} Gelatt, Kirk N. (ed.) (1999). Veterinary Ophthalmology (3rd ed. ed.). Lippincott, Williams & Wilkins. ISBN 0-683-30076-8. 
2. ^ Bloodhound Health Concerns

External links

Humans

• http://www.kellogg.umich.edu/patientcare/conditions/entropion.html
• http://www.nlm.nih.gov/medlineplus/ency/article/001008.htm
• http://www.upei.ca/~cidd/Diseases/ocular%20disorders/entropion.htm

v • d • e Eye disease · pathology of the eye (H00-H59, 360-379) Adnexa eyelid: inflammation (Stye, Chalazion, Blepharitis) · Entropion · Ectropion · Lagophthalmos · Blepharochalasis · Ptosis · Blepharophimosis · Xanthelasma · Trichiasis · Madarosis lacrimal system: Dacryoadenitis · Epiphora · Dacryocystitis orbit: Exophthalmos · Enophthalmos Globe Conjunctiva Conjunctivitis (Allergic conjunctivitis) · Pterygium · Pinguecula · Subconjunctival hemorrhage Fibrous tunic sclera: Scleritis cornea: Keratitis (Herpetic keratitis, Acanthamoeba keratitis, Fungal keratitis) · Corneal ulcer · Snow blindness · Thygeson's superficial punctate keratopathy · Corneal dystrophy (Fuchs', Meesmann) · Keratoconus · Keratoconjunctivitis sicca · Arc eye · Keratoconjunctivitis · Corneal neovascularization  · Kayser-Fleischer ring · Arcus senilis · Band keratopathy Iris and ciliary body Iritis · Uveitis (Intermediate uveitis) · Iridocyclitis · Hyphema · Rubeosis iridis · Persistent pupillary membrane · Iridodialysis · Synechia Lens Cataract · Aphakia · Ectopia lentis Choroid Choroideremia · Choroiditis (Chorioretinitis) Retina Retinitis (Chorioretinitis, Cytomegalovirus retinitis) · Retinal detachment · Retinoschisis · Ocular ischemic syndrome/Central retinal vein occlusion · Retinopathy (Bietti's crystalline dystrophy, Coats disease, Diabetic retinopathy, Hypertensive retinopathy, Retinopathy of prematurity) · Macular degeneration · Retinitis pigmentosa · Retinal haemorrhage · Central serous retinopathy · Macular edema · Epiretinal membrane · Macular pucker · Vitelliform macular dystrophy · Leber's congenital amaurosis · Birdshot chorioretinopathy Optic nerve and visual pathways Optic neuritis · Papilledema · Optic atrophy · Leber's hereditary optic neuropathy · Dominant optic atrophy · Optic disc drusen · Glaucoma · Toxic and nutritional optic neuropathy · Anterior ischemic optic neuropathy Ocular muscles, binocular movement, accommodation and refraction Paralytic strabismus: Ophthalmoparesis · Progressive external ophthalmoplegia · Palsy (III, IV, VI) · Kearns-Sayre syndrome Other strabismus: Esotropia/Exotropia · Hypertropia · Heterophoria (Esophoria, Exophoria) · Brown's syndrome · Duane syndrome Other binocular: Conjugate gaze palsy · Convergence insufficiency · Internuclear ophthalmoplegia · One and a half syndrome Refractive error: Hyperopia/Myopia · Astigmatism · Anisometropia/Aniseikonia · Presbyopia Visual disturbances and blindness Amblyopia · Leber's congenital amaurosis  · Subjective (Asthenopia, Hemeralopia, Photophobia, Scintillating scotoma) · Diplopia · Scotoma · Anopsia (Binasal hemianopsia, Bitemporal hemianopsia, Homonymous hemianopsia, Quadrantanopia) · Color blindness (Achromatopsia, Dichromacy, Monochromacy) · Nyctalopia (Oguchi disease) · Blindness/Low vision Pupil Anisocoria · Argyll Robertson pupil · Marcus Gunn pupil · Adie syndrome · Miosis · Mydriasis · Cycloplegia Eye infections Trachoma · Onchocerciasis Other Nystagmus · Glaucoma/Ocular hypertension · Floater · Leber's hereditary optic neuropathy · Red eye · Keratomycosis · Xerophthalmia · Phthisis bulbi eye navs: anat/adnexa anat/pathways/physio/dev, noncongen/congen/neoplasia, eponymous signs, proc

v • d • e Congenital malformations and deformations of eyes (Q10-Q15, 743) Adnexa Eyelid Ptosis · Ectropion · Entropion · Distichia · Blepharophimosis · Ablepharon · Marcus Gunn phenomenon Lacrimal apparatus Congenital lacrimal duct obstruction Globe Entire eye Anophthalmia · Microphthalmia Lens Ectopia lentis · Aphakia Iris Aniridia Anterior segment Axenfeld syndrome Cornea Keratoglobus · Megalocornea Other Buphthalmos · Coloboma · Hydrophthalmos · Norrie disease eye navs: anat/adnexa anat/pathways/physio/dev, noncongen/congen/neoplasia, eponymous signs, proc

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