Ocular Pathology

Question 1

You are most likely to see Corneal Endothelial Dystrophy

(MDx: Diffuse [bilateral] Corneal Edema)

in this breed of dog

Answer 1

Boston Terrier

Question 2

Increased intraocular pressure is more commonly known as

Answer 2

Glaucoma

Question 3

Diffuse corneal edema due to immune-complex deposition,

also known as “Blue Eye”

occurs in puppies that have survived the acute phase of

this disease

Answer 3

Infectious Canine Hepatitis

(CAV-1)

Question 4

This is the most common disease of the lens

Answer 4

Cataracts

Question 5

Inherited metabolic defects of the photoreceptor cells

are collectively known as

Answer 5

PRAs

Progressive Retinal Atrophy

Question 6

Metabolic deficiencies of these two components found in food

can lead to retinal degeneration and atrophy

Answer 6

Taurine

Vitamin A

Question 7

An adult cat can acquire blindness due to retinal atrophy and degeneration

if exposed to this drug (toxin)

Answer 7

Enrofloxacin

Question 8

Maturation of fibrin in vitreous humor, or fibrous adhesions

between ciliary bodies is known as

Answer 8

Cyclitic Membrane

Question 9

___________, a detectable malformation of the trabecular meshwork,

is the cause of ______ Glaucoma

Answer 9

Goniodygenesis; Primary Glaucoma

Question 10

T/F: Primary Glaucoma is the most common type of glaucoma

Answer 10

FALSE

Secondary Glaucoma is more common

Question 11

Inflammation of the eyelids

Answer 11

Blepharitis

Question 12

Granulomatous inflammation directed against the Meibomian gland

Answer 12

Chalazion

Question 13

The common name for bacterial infection of hair follicle or Meibomian gland usually caused by Staph aureus

Answer 13

Stye

Question 14

Severe conjunctival edema is better known as

Answer 14

Chemosis

Question 15

Herding breeds, especially collies, are susceptible to this

bilaterally symmetrical inflammatory condition of the the conjunctiva

Answer 15

Nodular Granulomatous Episcleritis

Question 16

How is the healing process of a corneal erosion

different from the healing process of a corneal ulceration?

Answer 16

Erosion requires only epithelial regeneration

Ulcer requires Stromal repair + Epithelial Regeneration

Question 17

Keratomalacia, or leukocyte necrosis of the corneal epithelium

and stroma, is usually due to a rapidly progressing bacterial infection,

and is better known as

Answer 17

Melting Ulcer

Question 18

In horses, what pathogen is implicated in Melting Ulcers?

Answer 18

Pseudomonas aeruginosa

Question 19

An eye that is shrunken, atrophic, scarred, and fibrotic

is known as “end-stage eye”. What is the scientific term for this?

Answer 19

Phthisis bulbi

Question 20

Chronic Superficial Keratitis, also known as Pannus, is an

immune-mediated condition

seen mostly in this breed of dog

Answer 20

German Shepherds

Question 21

Describe the pathogenesis of

Keratoconjunctivitis sicca, or Dry Eye,

which is characterized by mucopurulent exudate

Answer 21

Immune-mediated injury to lacrimal glands–>

Decreased tears–>

Drying out of cornea/conjunctiva–>

Chronic irritation

Question 22

Inflammation of the iris

Answer 22

Iridis

Question 23

Inflammation of the ciliary body

Answer 23

cyclitis

Question 24

Inflammation of the choroid

Answer 24

choroiditis

or

Posterior uveitis

Question 25

Inflammation of the choroid and retina

Answer 25

Chorioretinitis

Question 26

Inflammation of the uvea, retina, and vitreous

Answer 26

Endophthalmitis

Question 27

Inflammation of the cornea and sclera

Answer 27

Panophthalmitis

Question 28

Inflammation of the iris and ciliary body

Answer 28

Anterior uveitis

Question 29

A horse presents with periodic ophthalmia, moon blindness, and iridocyclitis. You're worried because you know that the horse is now susceptible to *Leptospira interrogans*, a previous systemic infection. What is this condition called?

Answer 29

Equine Recurrent Uveitis

Question 30

Inflammatory response to lens proteins

Answer 30

Lens-induced uveitis

Question 31

This type of lens-induced uveitis is characterized by the leakage of lens proteins from a hypermature cataract

Answer 31

Phacolytic

Question 32

This type of lens-induced uveitis is characterized by the rupture of the lens, and is more severe than the other type

Answer 32

Phacoclastic