Dogs with conjunctivitis will have redness and enlarged blood vessels in the sclera (the white part of the eyeball). They may also have increased tearing, yellow or green mucoid eye discharge, squinting or light sensitivity, or elevation of the third eyelid. The eyelids may get stuck together if there is a large amount of dried eye discharge. The dog may rub their eyes with the front paws or may rub their face along carpet or other objects.
Conjunctivitis is a simple diagnosis based on symptoms and the appearance of the eye; however, the cause of the conjunctivitis may be more difficult to diagnose. Diagnostic testing may include measuring tear production (Schirmer tear test), measuring the intraocular pressure (tonometry), and checking for defects in the cornea (fluorescein stain). If a foreign body is suspected, a topical solution is applied to numb the surface of the eye and a cotton tipped applicator is used to examine under both eyelids and the third eyelid. Additional testing may include culture, cytology, biopsy or allergy testing to determine the cause and provide an accurate treatment plan.
Most cases of conjunctivitis can be treated for under $500.
Recovery may take one to two weeks. In general, treatment is continued for several days after the eye regains its normal appearance.
Monitor for signs of recurrence.
No known prevention for most causes of conjunctivitis, with the exception of removing known irritants/allergens.
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