Test 2: lecture 24: eyelids

Question 1

palpebrae

Answer 1

eyelids

Question 2

sensation to eyelid is by — nerve

Answer 2

CV 5

Question 3

what is inside an eyelid

Answer 3

haired skin
muscle: orbicularis oculi
modified sebaceous glands (meobomian glands)
fibrous tarsal plate- supports the eyelid

Question 4

skin on inside of eyelid is called

Answer 4

palpebral conjunctiva

Question 5

eyelid function to — the eye

Answer 5

protect and maintain ocular surface health

remove debris, produce secretions, tear film distribution

Question 6

closure of eyelid is by what muscle

Answer 6

orbicularis oclui (CN7)

Question 7

opening on eyelid is by what muscle

Answer 7

levator palpebral superioris
CN3

Question 8

when do eyelids open in dogs and cats

Answer 8

10-14 days

Question 9

failure to open eyelid

Answer 9

ankyloblepharon

bacteria can pool under eyelid and cause injection or conjunctivitis

ophthalmia neonatorum

Question 10

how to fix eyelid laceration

Answer 10

fix ASAP- do not allow healing by second intention

close in two layers and use figure 8 knot to prevent knot on ocular surface

Question 11

why don’t eyelids get infected post op

Answer 11

very good blood supply

can use topical antibiotics

Question 12

blepharospasm

Answer 12

squinting of lids secondary to pain

weimeraner

Question 13

eyelid margin rolled inward

Answer 13

entropion

Question 14

eyelid margin rolls outward

Answer 14

ectropion

Question 15

drooping of eyelid

Answer 15

ptosis

Question 16

what is trichiasis

Answer 16

normally placed hairs, touching the eyeball

usually from eyelid rolling inward (entropion) or drooping (ptosis)

Question 17

how to treat entropion in a sharpea

Answer 17

pups will have eyelids tacked until full grown then surgery is done if needed

Question 18

ways to treat entropion

Answer 18

lubricate
tack- temporary, young dogs
surgery

Question 19

hotz celsus technique

Answer 19

used for entropion- pulls eyelid away from eye

Question 20

distichiasis

Answer 20

cilia (eyelashes) growing out of wrong place (meibomian glands)

Question 21

ectopic cilia

Answer 21

eyelashed that come through conjunctiva (inside of eyelid)

usually cause ulcers

Question 22

how to treat distichiasis

Answer 22

eyelashes growing out of glands and touching eyeball

plucked out
cryotherapy- cause necrosis of hair follicle (30% regrowth)

Question 23

most eyelid tumors in young dogs are

Answer 23

benign
papilloma or histiocytoma

Question 24

most eyelid tumors in older dogs are

Answer 24

benign
meibomian gland adenoma

Question 25

eyelid tumors in cats are —

Answer 25

usually more aggressive/malignant

usually benign in dogs

Question 26

young dog- how to treat

Answer 26

papilloma/histiocytoma

will usually regress on their own

may need surgery if causing symptoms- corneal ulcers

Question 27

how to remove small eyelid tumors

Answer 27

wedge/house resection

full thickness
2 layer closure
send for pathology: normally benign in dogs

do not FNA- go right to surgery

Question 28

how to treat large eye lid tumor, bigger then 1/3 eyelid length

Answer 28

FNA if possible

remove and reconstruct with skin graft

Question 29

born without part of eyelid or missing eyelid margin

Answer 29

eyelid agenesis

congenital, common in cats

Question 30

eyelid agensis will cause

Answer 30

no eyelid

can’t blink and loss of sebaceous glands leads to inflammation of the cornea (keratitis)
hair gets into eye (trichiasis)
tearing

Question 31

how to treat eyelid agenesis

Answer 31

can freeze away hair

can form rotational flap to form new eyelid

Question 32

dermoid

Answer 32

haired skin growing on eyeball

can usually dissect out

Question 33

H arry, 6 year-older border collie ran through barbed wire fence last week.

Q1. will you stay late on a Friday night to repair this, or have Harry return on Monday morning for surgery?

Q2. what suture technique will you use to ensure that the lower lid margin is aligned?

Answer 33

eyelid: fix ASAP
use 2 layer figure 8 suture

Question 34

— is inflammation of the eyelid

Answer 34

blepharitis

Question 35

what causes blepharitis

Answer 35

inflammation of eyelid:

infection: bacterial
sebaceous overproduction
scabies or demodex
immune mediated
drug reaction
food allergy

NOT surgical, refer to derm- antibiotics, anti-inflamatory drops, steroids