04 - disorders of the eyelids

Question 1

(structural or functional abnormalities)

1. failure of eyelid to fully develop = ?
2. can result in what?
3. see in what species?

Answer 1

1. agenesis (coloboma)
2. trichiasis and keratoconjuctivitis
3. cat and horse

Question 2

what is trichiasis?

Answer 2

abnormally positioned eyelashes that grow back towards the eye

Question 3

adhesion of eyelid margins to each other = ?

Answer 3

ankyloblepharon

(ankylo = stuck together) (blepharon = eyelids)

Question 4

entropion = ?

tx?

Answer 4

inversion of the eyelid margin (usually causes 2° trichiasis)

modified Hotz-Celsus excision

Question 5

ectropion = ?

Answer 5

eversion of the eyelid margin

Question 6

(eyelash abnormalities)

1. cilia arise from meibomian gland openings = ?

Answer 6

1. distichiasis

Question 7

(eyelash abnormals)

1. more than one hair emanates from a meibomian gland opening = ?

Answer 7

1. districhiasis

Question 8

1. ectopic cilia = hair erupts though what?

Answer 8

1. the palpebral conjuctiva

Question 9

1. blepharitis = ?
2. most common bacteria?
3. can also be caused by parasites

Answer 9

1. inflammation of the eyelids
2. staphylococcus intermedius

Question 10

(eyelid neoplasia)

1. most common in dog?
2. in cat?

Answer 10

1. meibomian gland adenoma (benign)
2. SCC (malignant)