Canine Eye Injuries & Diseases

 

 

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Husky Blue Eyes

This portion of the website is devoted to canine eye injuries and disease. These are graphic images of the canid. Please be aware of this as you visit this portion of the site.

Lagophthalmos

 

 

Lagophthalmos is the inability to blink. This can lead to exposure keratitis. Facial nerve dysfunction is the common cause of this disorder. Temporary lagophthalmos sometimes occurs after total ear canal ablation and bulla osteotomy surgery. The cornea needs to be kept moist with a preservative-free tear ointment. If the dog has permanent lagophthalmos surgery may be indicated.

Brow Ptosis

Brow Ptosis

 

 

Dogs with brow ptosis have very heavy brows. This can lead to entropion of the upper eyelids. When this interferes with vision and leads to corneal abnormalities brow life surgery is indicated.

lateral canthus

Instability of the Lateral Canthus

 

 

A primary defect or laxity of the retractor anguli oculi lateralis muscle and/or the lateral canthal tendon leads to instability of the lateral canthus. The canthus is either corner of the eye where the upper and lower eyelids meet. The lateral canthus is the side of the eye that is farther from the middle of the eye. There may be abnormal tarsal plate development. The tarsal plates are two comparatively thick, elongated plates of dense connective tissue, one is found in each eyelid, and contributes to its form and support. These dogs may also exhibit entropion and ectropion. The normal position of the lateral canthus varies by breed but is usually lateral and slightly ventral to a horizontal line drawn across the cornea. This frequently occurs in the St. Bernard, Newfoundland, Chow chow, Bloodhound, and Bullmastiff, but can occur in most breeds. Correction involves creation of new lateral canthus (lateral canthoplasty), removal of excess eyelid tissue and/or primary entropion repair.

meibomitis

Meibomitis

 

 

An Staphylococcal infection of Meibomian glands is the basis of meibomitis. Yellow, purulent pus is secreted. The conjunctival surface shows linear yellow-white inflammatory infiltrates perpendicular to the eyelid margin. Topical and systemic antibiotics and warm compresses are the treatment of choice. The dog may also need corticosteroids.

 

 

Stye in the dog's eye

Hordeolum (Stye)

A stye is an inflammation of the glands of Zeis or Moll (external hordeolum) or Meibomian gland (internal hordeolum). There is pain when the area is manipulated. Hot packs will help in the drainage of the stye. Topical antibiotic ointment may be indicated.

 

Blepharitis

 

Edema of the eyelids. Blepharedema occurs due to trauma, allergies, insect bites, secondary to orbital abscess, and vasculitis. Treatment depends on the underlying cause.

 

 

Brachycephalic ocular syndrome

Brachycephalic Ocular Syndrome


Brachycephalic breeds can have palpebral fissures that are too long to provide adequate coverage of their prominent globes because they have overly large eyelid openings. This causes their eyes to become dry due to insufficient lubricant of the ocular surface. This can lead to Medial canthal entropion, epiphora and tear staining, trichiasis, reduced corneal sensitivity, tear deficiencies, and shallow orbits. Medial canthopasty is the preferred surgery.


onchocerca lupi onchocerca lupi in the dog

Onchocercosis

 

 

Onchocerca lupi, a filarioid of zoonotic concern, infects dogs and cats causing ocular lesions of different degrees, from minor to severe. However, infected animals do not always display overt clinical signs, rendering the diagnosis of the infection obscure to the majority of veterinarians. Canine onchocercosis has been reported in the Old World and the information on its occurrence in the United States, as well as its pathogenesis and clinical management is still meagre. Dogs display subconjunctival and episcleral nodules, which were surgically removed. Whitish filaria-like parasites were morphologically and molecularly identified as O. lupi.