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Eyelids Flashcards

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7236941254BlinkingWhat is the function of the orbicularis oculi muscle?0
7236942988Palpebral branch of Facial nerve (CN 7)What innervates the orbicularis oculi muscle?1
7236945997Inability to blinkWhat happens if the orbicularis oculi muscle doesn't function?2
7236948856Medial palpebral ligament Retractor anguli oculi lateralis (Lateral palpebral ligament in cattle and sheep)What creates the elliptical shape of the palpebral fissure?3
7236956591Elevation of upper eyelidWhat is the function of levator palpebrae superioris muscle?4
7236961220ptosis (eyelid droop)What happens if the levator palpebrae superioris muscle doesn't function?5
7236959714Oculomotor (CN 3)What innervates the levator palpebrae superioris muscle?6
7236956592Elevation of upper eyelid.What is the function of Muller's muscle?7
7236966506Sympathetic innervationWhat innervates Muller's muscle?8
7236968823Ptosis (eyelid droop)What happens if the Muller's muscle doesn't function?9
7236957520Depression of the lower eyelidWhat is the function of Malaris muscle?10
7236971555Dorsal Buccal branch of Facial (CN 7)What innervates Malaris muscle?11
7236973127Reverse ptosis (lower eyelid slightly elevated)What happens if the Malaris muscle doesn't function?12
7236976143Elevates the upper eyelids (Levator palpebrae superioris muscle)CN 3 provides what for the eyelids?13
7236977822Sensation to the eyelidsCN 5 provides what for the eyelids?14
7236981946Dorsal buccal branch - depresses lower eyelid (Malaris muscle) Palpebral branch - closes eyelid (Orbicularis oculi)CN 7 provides what for the eyelids?15
7236984551Additional elevation of the upper eyelid (centrally)Sympathetic innervation provides what for the eyelids?16
7236988783Modified sebaceous glands Secrete lipid layer of the tear film - prevent evaporationWhat is the function of Meibomian (tarsal) glands?17
7236998481Orbicularis oculi muscleWhat is A?18
7236998697Hair follicleWhat is B?19
7236998824Perifollicular glandsWhat is C?20
7236999060Levator palpebral superioris muscleWhat is D?21
7237003862Tarsal plateWhat is E?22
7237005374Meibomian GlandWhat is F?23
7237010186Ankyloblepharon - delayed opening of the eyelids If infection (ophthalmia neonatorum) Open the eyelids with blunt forceps at medial canthus FLush with saline or 1:50 dilute betadine solution Fluorescein stain to check cornea for ulcers Topical antibiotic ointment (neomycin/polymyxin/bacitracin puppies; tetracycline kitten)Describe what you see and how to treat it24
7237025093Eyelid agenesis (colobomas) Simple: Wedge defect then close w/ 2 layer closure Larger: advanced surgeryDescribe what you see and how you treat it25
7237026704Cats Lateral portion of upper eyelidWhat is the typical species affected and its typical location for eyelid colobomas?26
7237034082Distichiasis - abnormal hair from Meibomian gland opening Treat only if have clinical signs Epilation if in 6 weeks problem again (hair regrowth then was problem) Cryosurgery (destroy follicles)Describe what you see and how to treat it27
7237041764Ectopic cilia - abnormal hair from palpebral conunctiva Surgical excision of hair follicleDescribe what you see and how to treat it28
7237046132Trichiasis - Normal hairs are rubbing on cornea Keep well groomed or nasal fold excision or lateral/medial canthoplastyDescribe what you see and how to treat it29
7237057335Lagophthalmos - lazy blinking; don't blink all the way so cornea is exposedWhat is the most common cause of Exposure Keratopathy Syndrome?30
7237060235Don't blink all the way Globe position (brachycephalic dogs) Facial nerve paralysis (CN 7)What can cause lagophthalmos?31
7237064446Brachycephalic - medial canthoplasty (shorten palpebral fissure, easier to blink, relieves nasal trichiasis) Facial nerve paralysis - permanent or temporary tarsorrhaphy (suture eyelids together)How would you treat Exposure Keratopathy Syndrome?32
7237074115TRUE - used to relieve the spastic (pain) component that would make them squint and make it look worseT/F Topical anesthetics are used to evaluate entropion33
7237078417Young animals - temporary tacking if < 6 mo to see if they grow out of it Adult --> Topical anesthetic first Evaluate and plan before sedation Hotz-Celsus procedureWhat is the treatment for entropion?34

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