Cattle ophthalmology Flashcards
1
Q
Infectious bovine rhinotracheitis - Clinical presentation
A
- Affects upper respiratory tract and eyes
- Conjunctivitis: Hyperaemia and chemosis (oedema)
- Bilateral serous/mucopurulent ocular discharge
- Diffuse corneal oedema, ulceration
- White plaques (0.2/0.5mm ⌀) 1-2 week after onset
2
Q
Malignant catarrhal fever - clinical presentation
A
- Photophobia
- Nasal & ocular discharge
- Uveitis: red eyes, corneal oedema, hypopyon, miosis, iris swelling
- Progression of corneal oedema and uveitis is associated with poor prognosis
- Occasionally CNS signs (encephalitis)
3
Q
Cataract - common causes
A
- Inherited
- BVD
- Schmallenberg
- Neospora
- Toxoplasma
- Vitamin A deficiency
4
Q
What is this lesion suggestive of?
A
Cataract
