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Flashcards in Glaucoma Deck (45)
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1

Which dog breeds are predisposed to glaucoma?

Pure-breds, Cockers, Bassets, Beagels, Samoyeds

2

What is primary glaucoma?

Iridocorneal angle that becomes compromised during the first few years of life

3

Decreased outflow of aqueous leads to glaucoma b/c pressure increases in the eye

Primary glaucoma

4

What causes secondary glaucoma?

Anterior uveitis, neoplasia, diabetes

5

How does anterior uveitis cause glaucoma?

Inflammatory debris plug iridocorneal angle

6

What drains the aqueous from the eye?

Iridocorneal angle

7

What is buphthalmos?

Enlargement of the globe

8

What is corneal edema?

Blue haze over cornea (NOT A CATARACT)

9

How is the pupil affected by glaucoma?

Mydriasis

10

What fundic changes will you see with glaucoma?

retinal vascular attenuation, tapetal hyperreflectivity

11

How do you diagnose glaucoma?

Increased IOP

12

How do you treat glaucoma?

IV mannitol, carbonic anhydrase inhibitor, prostaglandin analog

13

What prostaglandin analog can you use to treat glaucoma?

Topical lataoprost

14

How does mannitol help treat glaucoma?

Decreases IOP through osmosis

15

What carbonic anhydrase inhibitors can you use to treat glaucoma?

Methazolamide/dorzolamide

16

How do carbonic anhydrase inhibitors help treat glaucoma?

Decrease aqueous production

17

How soon after one eye develops glaucoma will the other eye develop glaucoma?

6-12mo

18

Recurrent bouts of what disease in horses can lead to glaucoma?

Equine recurrent uveitis

19

An enzyme found in the ciliary body that aids in the production of aqueous humor

Carbonic anhydrase

20

How is the optic nerve affected by glaucoma?

Loses myelin and will displace posteriorly (looks cupped)

21

What is the direction of aqueous humor flow?

Ciliary body --> post. chamber --> pupil --> ant. chamber --> iridocorneal angle --> venous drainage

22

Where does aqueous drain in the horse?

Uveoscleral angle

23

What does optic disc cupping look like?

Dark halo around retina, vessels appear on a different plane

24

How do you perform a ciliary body ablation?

Intravitreal gentamicin

25

Usually buphthalmic globes are blind. What are the exceptions?

Puppies, Shar Peis, horses

26

How do you measure IOP?

Tenometry

27

What should be measured in every "red eye" with an intact cornea?

IOP

28

What is normal IOP in animals?

10-20mmHg

29

What is used to examine the iridocorneal angle?

Gonioscopy

30

Is primary angle closure glaucoma more common in males or females?

Females