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Anatomic Pathology 2 > Species specific eye lesions > Flashcards

Species specific eye lesions Flashcards

1
Q

What ocular diseases do dogs typically get (14)?

A

glaucoma, idiopathic lymphoplasmacytic anterior uveitis, cataract, blastomycosis, intraocular neoplasms, retinal degeneration and atrophy, granulomatous episcleritis, conjunctival neoplasms, pannus, periocular/retrobulbar cellulitis or abscess, entropion and ectropion, hypertrophy of gland of 3rd eyelid, chalazion, eyelid tymors

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2
Q

What is glaucoma?

A

disease due to a persistent increase in intraocular pressure

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3
Q

What are the types of glaucoma?

A

primary and secondary

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4
Q

What is the difference between primary and secondary glaucoma?

A

primary glaucoma develops without apparent acquired disease and secondary develops due to an acquired disease

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5
Q

What other ocular lesion is primary glaucoma typically associated with?

A

goniodysgenesis

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6
Q

How does secondary glaucoma develop?

A

the acquired intra-ocular disease occludes the iridocorneal angle, obstructing aqueous humor resorption

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7
Q

What lesions are caused by glaucoma?

A

retinal degeneraton, cavitation of the optic disk, buphthalmos, scleral injection, and corneal striae

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8
Q

What part of the retina does glaucoma cause degeneration in?

A

the inner segments of the non-tapetal retina

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9
Q

What are corneal striae?

A

streaks of edema due to small tears in Descemet’s membrane

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10
Q

What is blastomycosis?

A

severe pyogranulomatous endophthalmitis

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11
Q

What causes blastomycosis?

A

B. dermatitidis in the choroid, subretinal space, and vitreous chamber

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12
Q

What intraocular neoplasms do dogs get?

A

uveal melanoma, ciliary body epithelial tumor, and lymphosarcoma

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13
Q

What are some examples of retinal degeneration and atrophy that dogs get?

A

progressive RA and sudden acquired retinal degeneration syndrome (SARDS)

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14
Q

What is SARDS?

A

sudden onset of photoreceptor degeneration

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15
Q

What type of neoplasms do canines get in their conjunctiva?

A

hemangiosarcoma and squamous cell carcinomas

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16
Q

What is chalazion?

A

granulomatous meibomian gland adenitis and blepharitis

17
Q

What eyelid tumors do dogs get?

A

melanoma, meibomian gland tumors, and squamous cell carcinomas

18
Q

What ocular diseases do cats get?

A

ulcerative keratitis, chlamydial conjunctivitis, corneal sequestration, FIP uveitis, cryptococcosis, intra-ocular neoplasms, retinal degeneration

19
Q

What causes ulcerative keratitis?

A

feline herpesvirus

20
Q

What causes chlamydial conjunctivitis?

A

chlamydophila felis

21
Q

What is the pathogenesis of FIP uveitis?

A

begins with anterior uveitis, then panuveitis, then endophthalmitis

22
Q

What is cryptococcosis?

A

severe granulomatous endophthalmitis

23
Q

What causes cryptococcosis?

A

C. neoformans in choroid, subretinal space, and vitreous chamber

24
Q

What intraocular neoplasms do cats get?

A

diffuse iris melanoma, lymphosarcoma, and trauma-induced intra-ocular sarcoma

25
Q

What causes retinal degeneration in cats?

A

taurine deficiency and fluoroquinolone toxicosis

26
Q

What ocular diseases do horses get?

A

mycotic keratitis, squamous cell carcinoma, periocular nematode infection, and equine recurrent uveitis

27
Q

What is mycotic keratitis secondary to?

A

corneal erosions/ulcers

28
Q

What bacteria can cause mycotic keratitis in horses?

A

Aspergillus

29
Q

What can mycotic keratitis result in?

A

a perforated ulcer and endophthalmitis

30
Q

Where do squamous cell carcinomas typically manifest in horses?

A

the eyelids and 3rd eyelids

31
Q

What lesion is associated with periocular nematode infection?

A

eosinophilic granulomatous conjunctivitis/lacrimal adenitis

32
Q

What is thought to be the cause of equine recurrent uveitis?

A

a cross reaction of intrinsic uveal antigens with antibodys to leptospira antigens

33
Q

What ocular diseases do cows get?

A

infectious keratoconjunctivitis, squamous cell carcinoma, lymphosarcoma, and malignant catarrhal fever

34
Q

What is infectious keratoconjunctivitis?

A

pink eye

35
Q

What does infectious keratoconjunctivitis lead to?

A

perforation and iris prolapse

36
Q

Where do cows get squamous cell carcinomas?

A

on their eyelids

37
Q

What typically happens with ocular lymphosarcomas in cattle?

A

they are typically involved with the back of the eye which eventually pushes it out

38
Q

What causes malignant catarrhal fever?

A

ovine herpesvirus 2

39
Q

What does malignant catarrhal fever cause?

A

lymphoplasmacytic vasculitis and panuveitis

Anatomic Pathology 2 (48 decks)

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