Conjunctiva and Lacrimal Flashcards
(37 cards)
What is the most sensitive test for determining ocular connection to the brain?
Dazzle reflex
What nerves does the palpebral reflex assess?
5 and 7
What nerves does the menace response assess?
2 and 7
What nerves does PLR assess?
2 and 3
What nerves does the dazzle reflex assess?
2 and 7
What does the oculocephalic reflex assess?
Peripheral and central vestibular components
CN 2, 3, 4, 6
What does the corneal reflex assess?
5 and 7
What are the three red eye conditions?
Keratoconjunctivitis
Uveitis
Glaucoma
Define chemosis.
Edema of the conjunctiva
Define conjunctival hyperemia.
Used to describe congestion of the superficial vessels of the conjunctiva, predominance of this finding suggests superficial disease
Define conjunctival lymphoid follicles.
A response to non-specific antigenic stimulation, presence of these follicles anywhere but the bulbar surface of the third eyelid is considered abnormal and consistent with a diagnosis of conjunctivitis
Define conjunctival fornix.
The area where palpebral conjunctiva meets bulbar conjunctiva
Define conjunctivitis.
Inflammation of the conjunctiva exclusively
Define episcleral injection.
Congestion of deep conjunctival vessels, known as episcleral vessels, predominance of this clinical sign suggests deeper disease processes
Define epiphora.
Abnormal overproduction of tears
Define ghost vessels.
Non-perfused corneal blood vessels, these vessel tracks provide evidence of previous keratitis
Define goblet cells.
Present in conjunctival epithelium and produce the innermost mucous layer of the three-layered tear film
Define keratitis.
Inflammation of the cornea, clinical signs include corneal neovascularization (most common), corneal pigmentation, corneal fibrosis, corneal ulceration, and white blood cell infiltration
Define mucoid discharge.
A very common clinical sign with conjunctivitis
Define mucopurulent discharge.
Most commonly found in cases of KCS, due to loss of the aqueous portion of the tear film which then causes mucous overproduction, bacterial overgrowth, and subsequent white blood cell recruitment
Define symblepharon.
Permanent adhesion between the conjunctiva and the cornea
Where is the only place you should find lymphoid tissue in the eye?
Bulbar surface of the third eyelid
What are the clinical signs for allergic conjunctivitis?
Blepharospasm
Epiphora
Mucoid discharge
Hyperemia
Lymphoid follicles (specific sign)
What is the common signalment for allergic conjunctivitis?
Young dogs and/or atopic dogs
