MCQs - Conditions of the Eyelids and Third Eyelid Flashcards
An internal hordeolum is
a. A localised infection of the gland of Zeiss and/or Moll which often occurs as part of a more generalised skin disease
b. A localised infection within a meibomian gland
c. A collection of inspissated meibum trapped within the meibomian gland as a result of blockage of the duct to the gland
d. An eyelid adenoma with a large proportion within the eyelid
The correct answer is: A localised infection within a meibomian gland
An internal hordeolum is:
A localised infection within a meibomian gland
The correct answer is: A localised infection within a meibomian gland
When the canine upper eyelid is elevated
a. It results from contraction of the frontalis muscle which is mediated by the oculomotor nerve
b. It results from a combination of contraction of both Muller muscle and the levator palpebrae superioris muscle
c. It occurs as a direct result of relaxation of the orbicularis oculi muscle
d. It results from contraction of the levator palpebrae superioris muscle, but at the same time the ventral rectus contracts to prevent the globe from rotating dorsally
When the canine upper eyelid is elevated
It results from a combination of contraction of both Muller muscle and the levator palpebrae superioris muscle
As a rough estimate, leaving a nictitans gland prolapsed without surgical replacement
a. Will result in KCS in 20% of eyes in which it is left, compared with 40% of those that have the gland excised and 14% of those which have it surgically replaced
b. Will result in KCS in 32% of eyes in which it is left, compared with 65% of those that have the gland excised and 10% of those which have it surgically replaced
c. Will cause exposure of the gland and conjunctivitis, but as the gland is not removed, the tear production will not be affected
d. Will result in KCS in 43% of eyes in which it is left, compared with 48% of those that have the gland excised and 14% of those which have it surgically replaced
As a rough estimate, leaving a nictitans gland prolapsed without surgical replacement
d. Will result in KCS in 43% of eyes in which it is left, compared with 48% of those that have the gland excised and 14% of those which have it surgically
Well done
The correct answer is: Will result in KCS in 43% of eyes in which it is left, compared with 48% of those that have the gland excised and 14% of those which have it surgically replaced
Cytology of plasmoma reveals
a. Mast cells and plasma cells
b. Plasma cells and small lymphocytes
c. Histiocytes, lymphocytes, plasma cells and multinucleated giant cells
d. Eosinophils, plasma cells and neutrophils
The correct answer is: Plasma cells and small lymphocytes
Cytology of plasmoma reveals
b.Plasma cells and small lymphocytes
The correct answer is: Plasma cells and small lymphocytes
Euryblepharon refers to
a. Overlong eyelids
b. Iatrogenic eyelid damage
c. Delayed eyelid opening in neonates
d. Incomplete eyelid closure
The correct answer is: Overlong eyelids
Euryblepharon refers to
Overlong eyelids
The correct answer is: Euryblepharon refers to Overlong eyelids
Juvenile cellulitis
a. Requires the performance of skin scrapes and cytology of meibomian gland secretions to rule out underlying demodex
b. Is caused by bacterial skin infection and requires systemic antibiotics based on culture and sensitivity, with corticosteroids being contra-indicated
c. Responds to appropriate empirical antibiotic treatment, but may also benefit from anti-inflammatory doses of corticosteroids
d. Requires early and aggressive systemic therapy with immunosuppressive doses of prednisolone
Juvenile cellulitis
d. Requires early and aggressive systemic therapy with immunosuppressive doses of prednisolone
The third eyelid
a. Contains smooth muscle in the cat, and denervation of this muscle occurring as part of Horner’s syndrome contributes to the third eyelid protrusion
b. Contains striated muscle in dogs and cats and it is spasm of this muscle that causes third eyelid protrusion in tetanus
c. Does not contain muscle and is protruded passively in dogs and cats by globe retraction
d. Contains striated muscle in the cat only, which is innervated by the facial nerve
The third eyelid
Contains smooth muscle in the cat, and denervation of this muscle occurring as part of Horner’s syndrome contributes to the third eyelid protrusion
The correct answer is: Contains smooth muscle in the cat, and denervation of this muscle occurring as part of Horner’s syndrome contributes to the third eyelid protrusion
Haemangiosarcomas arising from the eyelids of cats
a. Have a good prognosis following complete surgical excision
b. Are optimally treated by radiation
c. Have a high rate of local recurrence
d. Have a high metastatic potential
Haemangiosarcomas arising from the eyelids of cats
Have a good prognosis following complete surgical excision
Eyelid agenesis in cats
a. Has a breed predisposition in the Birman
b. Most commonly affects the lateral upper eyelids
c. Most commonly affects the lateral lower eyelids
d. Most commonly affects the lateral canthus
The correct answer is: Most commonly affects the lateral upper eyelids
Eyelid agenesis in cats:
Most commonly affects the lateral upper eyelids
The correct answer is: Most commonly affects the lateral upper eyelids
A modified Kuhnt-Szymanowski procedure is useful for
a. Lower eyelid ectropian
b. Caruncular trichiasis
c. Upper eyelid trichiasis
d. Eyelid reconstruction
A modified Kuhnt-Szymanowski procedure is useful for
a.Lower eyelid ectropian
