Feline Anterior Uveitis Flashcards
What two components of the eye make up the anterior uvea?
Iris
Ciliary Body
Posterior Uveitis involves which portion of the eye?
Choroid
What clinical signs are associated with uveitis?
Photophobia
“Red-Eye” consistent with conjunctival hyperemia
Epiphora or Seromucoid Discharge
Blepharospasm
Third Eyelid Elevation
What is seen on ophthalmic exam that is pathognomonic for anterior uveitis?
Aqueous flare
What is seen in the image below and what disease processes are they associated with?
Keratic Precipitates associated with Anterior Uveitis
What is seen in the image below?
Anterior Synechia - Adherence of the iris to the cornea
What causes aqueous flare?
Aqueous flare occurs secondary to the break-down of the blood-aqueous barrier and release of protein/cells into the anterior chamber from the iridal and ciliary vessels. Basically, the vessles become hyper-permeable so stuff leaks out of them.
What three things are needed to observe aqueous flare?
- A dark room
- A focal light source
- Appropriate positioning
What are the four causes of anterior uveitis? Which is the most common
Idiopathic (most common - 50-70%)
Intraocular (cataracts, intraocular tumors)
Infectious (4 F’s and T, B)
Neoplastic (Lymphoma)
What is the most common intra-ocular tumor in cats?
Diffuse Iris Melanoma
What are the 6 infectious causes of anterior uveitis?
4Fs, T, and B
FeLV (Feline Leukemia Virus)
FIV (Feline AIDS)
FIP (Feline Infectious Peritonitis)
Fungal (Cryptococcus)
T (Toxoplasma gondii)
B - Bartonella henselae
How do we treat Anterior Uveitis?
Treat the underlying cause
Nonspecific therapies:
Topical Steroid
Topical Mydriatic (Atropine) if the IOP is low or normal
Oral Steroid if negative for infectious disease
