Pathology of Eyes and Ears Flashcards

1
Q

Combines to focus light on the retina

A
  1. retina
  2. sclera
  3. choroid
  4. cornea
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2
Q

Three concentric tunics of the eyeball

A
  1. fibrous
  2. vascular
  3. nervous
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3
Q

3 refractive media of the eye

A
  1. aqueous humor
  2. lens
  3. vitreous
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4
Q

Adnexa of the eye

A
  1. Eyelids
  2. Conjunctiva
  3. Nictitating membrane
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5
Q

absence of the globe

A

anophthalmia

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6
Q

abnormally small globe

A

microphthalmia

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7
Q

developmental anomaly char. by presence of single median eye in a single median orbital fossa

A

cyclopia

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8
Q

congenital absence of a portion of an ocular tissue

A

coloboma

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9
Q

inflammation of the eye

A

Ophthalmitis

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10
Q

excessively large cornea

A

megalocornea

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11
Q

small than normal cornea

A

microcornea

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12
Q

piece of skin on the cornea, conjunctiva, or both

A

dermoid

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13
Q

keratoconjunctivitis sicca

A

dry eye

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14
Q

fibrovascular tissue invades cornea beneath epithelium

A

Pannus

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15
Q

inflammation of the cornea

A

keratitis

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16
Q

Outcome of Corneal ulceration

A
  1. scars
  2. keratectasia
  3. descemetocele
  4. glaucoma and phthisis bulbi
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17
Q

Infectious Keratitis etiologic agent in sheep

A

Ricketssial conjunctiva

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18
Q

inflammation involving the iris, ciliary body and choroid

A

uveitis

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19
Q

What are the sequels of uveal inflammation?

A
  1. posterior and anterior synechiae
  2. blockage of filtration meshwork by synechia
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20
Q

high intraocular fluid pressure, optic disc lesion and eventual loss of vision

A

Glaucoma

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21
Q

absence of lense

A

aphakia

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22
Q

opacity of the crystalline lens and its capsule

A

cataract

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23
Q

dislocation or displacement of the lens

A

Luxation of the lens

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24
Q

transparent avascular gel filling the globe posterior to the lens

A

Vitreous body

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25
Q

accumulation of fluids, exudate, blood or neoplastic cells within the potential space

A

retinal detachment

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26
Q

consists of axons of the ganglion cells of retina and is white fiber tract of the CNS, extending from the eyeball to the optic chiasma

A

optic nerve

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27
Q

swelling of the nerve head

A

papilledema (disc edema)

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28
Q

inflammation of the optic nerve

A

optic neuritis

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29
Q

inflammation of the conjunctiva

A

conjunctivitis

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30
Q

a well vascularized CT between bulbar conjunctiva and sclera

A

Episclera

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31
Q

inflammation of the eyelids

A

blepharitis

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32
Q

folliculitis due to pyogenic infection of the perifollicular tissue

A

Hordeolum

33
Q

inflammation of the lacrimal gland

A

sialodacryoadenitis

34
Q

Sialodacryoadenitis in rats is caused by?

A

coronavirus

35
Q

deviation or protrusion of the orbit

A

Exophthalmos

36
Q

orbital inflammation

A

cellulitis

37
Q

exudates (fibrin and neutrophils) in the anterior chamber

A

Hypopyon

38
Q

inflammation of the cornea

A

keratitis

39
Q

protrusion of the iris through a defect in the cornea

A

anterior staphyloma

40
Q

enlargement of the eye

A

buphthalmos

41
Q

protrusion of the eye

A

exophthalmos

42
Q

Causes of exophthalmos

A
  1. tumour
  2. abscess
  3. hemorrhage
43
Q

hemorrhage in the anterior chamber

A

hyphema

44
Q

opacity of the lens

A

cataract

45
Q

labyrinth is divided to?

A
  1. cochlea
  2. vestibular system
46
Q

has the tympanic cavity with its contents and auditory tubes

A

middle ear

47
Q

has the pinna and external auditory meatus

A

external ear

48
Q

otitis

A

ear inflammation

49
Q

when lesions are extensive and involve the petrous temporal bone

A

otitis interna

50
Q

otitis media or interna most common cause

A

Mycoplasma bovis

51
Q

inflammation of eyelids

A

blepharitis

52
Q

used to describe the inflammatory condition of conjunctiva

A

conjunctivitis

53
Q

Inward turning of eyelid

A

entropion

54
Q

entropion may result to?

A

keratitis or conjunctivitis

55
Q

term for conjunctivitis caused by double row of eye lashes

A

disctichiasis

56
Q

the absence of lens

A

aphakia

57
Q

small size of lens

A

microphakia

58
Q

underdeveloped optic nerve with
absence of optic nerve layer and ganglion cell layer of retina

A

hypoplasia of the optic nerve

59
Q

absence of optic nerve

A

agenesis of the optic nerve

60
Q

congenital defect in the continuity of one of the tunics of the eye

A

coloboma

61
Q

absence of the eye which may occur due to vitamin A deficiency in dam

A

congenital anophthalmos

62
Q

decreased size of eyes and may occur due to maternal vitamin A deficiency

A

congenital microphathalmos

63
Q

occurs in cattle and dogs due to
effect of inherited recessive gene trait

A

congenital opacity of cornea

64
Q

day blindness which may occur in dogs due to single autosomal recessive gene

A

hemeralopia

65
Q

inflammation of cornea and conjunctiva characterized by congestion of eyes, blindness, opacity and corneal edema

A

keratoconjunctivitis

66
Q

opacity of lens due to abnormal
proliferation of lens epithelium in anterior end as a result of
injury

A

subcapsular cataract

67
Q

opacity of lens due to abnormal
growth of lens epithelium at posterior face of lens

A

posterior polar cataract

68
Q

opacity of lens due to disorganization of the lens fibers

A

cortical cataract

69
Q

increased density of fibers of lens at the centre and occurs in old animals

A

nuclear cataract

70
Q

liquefaction of cortical substance
and has not been observed in animals

A

morgagnian cataract

71
Q

congenital cataract is associated with?

A

Chediak-higashi syndrome

72
Q

occurs due to failure of closure of primary lens vesicle at the periphery of
lens vesicle

A

congenital cataract

73
Q

retinitis associated with inflammation of choroids

A

chorioretinitis

74
Q

inflammation of iris and uvea

A

iridocyclitis

75
Q

characterized by enlargement of eye ball, opaque cornea and increase aqueous humor

A

glaucoma

76
Q

mite causing otitis externa

A

Psoroptes communis

77
Q

tick causing otitis externa

A

otobius megnini

78
Q

inflammation of middle ear including tympanic cavity and eustachian tube

A

Otitis media

79
Q

inflammation of inner ear including
membranous and osseous labyrinth, also known as labyrinthitis

A

otitis interna