Diseases of Eye Accessory Structures Flashcards
three categories of eye diseases
accessory structures
globe
retina and neural pathway
four accessory structures that can become diseased
conjunctiva
tear gland
eyelid
nictitans
three parts of the globe that can become diseased
cornea
aqueous chamber
lens
three typical signs of diseases of the accessory structures
red eyes
blepharospasms
ocular discharge
blinking or other eyelid movements, like twitching, that you can’t control
blepharospasms
conjunctivitis is rarely what
primary disease > caused by underlying disease
three signs of conjunctivitis:
c_________
h_________
d_________
chemosis
hyperemia
discharge
what is important to treat with conjunctivitis
treat underlying disease
what kind of solution is preferred for treating conjunctivitis
ointments because they last longer, drops have to be applied more frequently
chemosis
overflow of tears
epiphora
epiphora
two things that result in epiphora
overproduction of tears
reduction in tear drainage
a blockage of what causes reduction in tear drainage
blockage of lacrimal duct because of swelling or inflammation
obstruction in tear duct to allow drainage
imperforate puncta
which two breeds are more likely to have imperforate puncta
poodles, cockers
why do brachycephalic dogs experience epiphora
shallow orbits (and big eyes) that makes tears spill over to the face
what on a brachycephalic dogs face can be irritated by epiphora
facial folds
how can you correct imperforate puncta
flush the nasolacrimal duct or surgically remove the tissue covering the puncta
swelling of the eyelids
blepharitis
two forms of eyelid “bumps”
Meibomian gland
Sebaceous cyst
rolled in eyelid
entropion
rolled out eyelid
ectropion
three forms of entropion
congenital
acquired non spastic
acquired spastic
cause of acquired non spastic entropion
trauma, surgery
cause of acquired spastic entropion
secondary to painful corneal/conjunctiva
treatment for entropion/ectropion
surgical treatment
entropion
ectropion
Eyelashes arising from abnormal place
distichia
eyelash growing on the inner surface of eyelid
ectopic cilia
treatment for distichia or ectopic cilia
surgical
Hypertrophy of nictitans gland
cherry eye… aka prolapsed third eyelid
three functions of the third eye lid:
p_________ m_________
s_____ t_____ f_____
p_____ l_____ f______
protectant membrane
spread tear film
produce lacrimal fluid
why should you not remove cherry eye
it will lead to dry eye - they need their third eye lid!
Hypertrophy of Nictitans gland Cherry Eye
