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Subconjunctival haemorrhage in 147 dogs
J Saastamoinen1, C R Rutter2, U Jeffery1,3
1Lovers Lane Animal Medical Center, 4660 W Lovers Ln, Dallas, 75209, Texas, USA.
Objectives:
To identify differential diagnoses for subconjunctival haemorrhage in dogs.
Materials And Methods:
Retrospective case series.
Results:
Of 147 dogs with subconjunctival haemorrhage, 119 had a history of trauma. The most common types of injury were vehicular trauma (47/119) and dog attacks (32/119). Confirmed or suspected non-accidental injury was reported for 5/119. Of the 28 dogs without a history of trauma, 13 had a bleeding disorder and of these, immune-mediated thrombocytopenia was the most common diagnosis (9/13). Other causes included seizure disorders (4/28), vasculitis (3/28) and ocular or periocular disease (3/28).
Clinical Significance:
Subconjunctival haemorrhage in dogs can be secondary to a wide range of injuries and systemic diseases, bleeding diathesis or ocular disease.

