Retinal haemorrhage

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Retinal haemorrhage is a retinal disease that is not unusual in the cat and may have a variety of causes.

Blunt and penetrating injuries are common causes of retinal and choroidal haemorrhage. Anaemic retinopathy and thiamine deficiency, as a consequence of thiaminase-rich diets or low thiamine content has a variety of effects which include dilated retinal vessels, retinal haemorrhages, neovascularisation and peripapillary , as well as neurological signs, and culminates in coma and death in unrecognised cases[1].

Inflammatory retinopathies may be associated with haemorrhage (e.g FIP) and migrating parasites can produce haemorrhage. Haemorrhage may also be a consequence of primary and secondary neoplasia. Hypertension is one of the most common causes of retinal and choroidal haemorrhage. Hemostatic disorders are not regularly associated with intraocular haemorrhage.

References

  1. Barnett, KC & Crispin, SM (2002) Feline ophthalmology: An atlas & text. WB Saunders, London