Sheep Eye Diseases

Question 1

Name 3 primary ocular diseases

Answer 1

Entropion
Infectious ovine keratoconjunctivitis (pink eye)
Listeriosis

Question 2

Tx of entropion

Answer 2

Manual eversion of eyelids, subconjunctival/SQ injection of procaine penicillin

severe cases = surgery

Inheritable, so should cull ram

Question 3

Tx of infectious ovine keratoconjunctivitis

Answer 3

[theoretically spontaneous recovery in ~3 weeks]

LA oxytet IM

Question 4

Causative agents for infectious ovine keratoconjunctivitis

Answer 4

Mycoplasma conjunctivae (considered primary agent)

Question 5

what is another name for listeriosis ocular problems?

Answer 5

silage eye

Question 6

What causes bright blindness?

Answer 6

prolonged ingestion of Pteridium aquilinum (bracken fern)

Question 7

What commonly used flukicide can cause blindness?

Answer 7

Closantel

Question 8

With what 2 conditions can you see apparent blindness (but is reversible)?

Answer 8

Pregnancy toxemia and Polioencephalomalacia (PEM)