Ophthalmology p2 Flashcards
(9 cards)
1
Q
Uveitis
1. Etiology
2. Causes (4)
A
- Inflammation of the iris, ciliary body, &/or choroid.
- Causes
- Trauma & Auto-immune
- Neoplasia
- Dysgenesis (abnormal fetal development)
- Degeneration (age, oxidative stress)
2
Q
Uveitis clinical signs (7)
A
- Squinting
- Photophobia
- Swollen iris, adhesions
- Corneal edema
- Cells in anterior chamber
- Secondary glaucoma
- Cataracts
Others
3
Q
Uvea
1. Masses (3)
2. Diffuse Iris Melanoma (3)
3. Iris sphincter atrophy (1)
4. Cysts (3)
5. Abnorm Development (just know it exists)
A
- Usually primary
- Melanoma. Usually benign but will trash eye
- Lymphoma. Death - Cats
- Years to develop
- Can result in death - Small old dogs
- Spherical
- Transilluminate
- Golden retriever uveitis - Abnormal development
4
Q
Lens
1. Subluxation (3)
2. Cataract (6)
3. Nuclear sclerosis (1)
A
- Moves out of place
- Terriers, old cats
- Secondary to glaucoma - Becomes cloudy
- Any opacity
- Age related
- Breed related - Normal aging
5
Q
Lens-Induced Uveitis (LIU)
1. Etiology
2. It can cause… (4)
A
- Proteins hidden from immune system by the lens capsule. When immune system detects lens proteins (made up of 45% protein), it attacks the eye.
- Can cause:
- Cataract (mild-mod)
- Ruptured lens (severe)
- Glaucoma &/or Retinal detachment (LIU)
6
Q
Cataracts
Causes (3)
A
- Genetic
- Diabetes (dogs)
- Most diabetic dogs will develop catarcts in both eyes within 6-9 months of Dx
- O/N
- Emergency! Lens can rupture! - Trauma
7
Q
T/F: Cataracts is common in cats
A
False.
It is rare and typically secondary to uveitis
8
Q
Fundus
1. What is it?
2. What does it contain? (4)
A
- What you can see in the back of the eye
- Contains
- Optic nerve
- Retina
- Retinal blood vessels
- Non-tapetal fundus
- Tapetum
9
Q
Progressive Retinal Atrophy (PRA)
A
