Canine Conjunctivitis: Causes and Welfare Management

Conjunctivitis in dogs encompasses multiple conditions causing ocular discomfort, discharge, and potential vision compromise requiring accurate diagnosis.

Key Facts

Conjunctivitis is one of the most common ophthalmic presentations in primary care veterinary practice
Causes include bacterial infection, viral infection, allergies, foreign bodies, and structural eyelid problems
Brachycephalic breeds including Bulldogs and Shih Tzus have anatomical predispositions to chronic conjunctivitis
Distichiasis and ectopic cilia cause constant corneal irritation that creates chronic pain if untreated
Digital cherry eye in short-nosed breeds requires surgical replacement or removal to prevent recurrence

Welfare Considerations

Conjunctivitis causes persistent ocular discomfort including a gritty, burning sensation, photophobia, and tear overflow that reduces quality of life for affected dogs. Rubbing and pawing at affected eyes causes self-trauma and secondary corneal ulceration. Structural causes including ectopic cilia produce constant mechanical irritation that is chronically painful but easily overlooked by owners who attribute signs to allergy or infection. Accurate diagnosis distinguishing infectious from structural or allergic causes determines treatment approach. Welfare-centered management addresses root causes rather than symptom suppression, preventing progression to more severe corneal disease.

What You Can Do

Seek veterinary evaluation for any dog showing persistent eye redness, discharge, or rubbing
Request ophthalmologic examination if signs persist despite initial treatment
Prioritize breed selection that avoids extreme brachycephalic conformations predisposing to eye disease
Monitor dogs for early conjunctivitis signs during regular grooming and health checks