Test 2: lecture 1

Question 1

Answer 1

Question 2

Answer 2

Question 3

Answer 3

Question 4

Answer 4

Question 5

Answer 5

finoff transiluminator

Question 6

Answer 6

tonometer

Question 7

what is menace response

Answer 7

bring hand toward eye
if eye normal dog will see and CN7(facial) will cause the eyelid to close

Question 8

what nerve controls pupillary light reflex

Answer 8

parasympathetic nucleus of CN3

pupils should contract(miosis)

Question 9

a normal pupillary light reflex should be what three things

Answer 9

rapid
complete (miosis)
persistent

Question 10

how to get indirect pupillary light reflex

Answer 10

nerves cross sides and stimulate both pupils to contract

Question 11

what muscle closes the eyelid and what CN controls it

Answer 11

orbicularis oculi
CN7 (facial)

Question 12

sebaceous (secrete the lipids that form the superficial layer of tear film)

Answer 12

tarsal (meibomian)

Question 13

Answer 13

orbicularis oculi- closes eyelid (CN7)
muller’s- opens eye lid (sympathetic)
levator palpebrae superioris- raise upper eyelid (CN3)

Question 14

raise upper eyelid oculomotor (CN III)

Answer 14

levator palpebrae superioris

Question 15

opens palpebral fissure sympathetic

Answer 15

muller’s (smooth mucle)

Question 16

closes palpebral fissure
facial (CN VII)

Answer 16

orbicularis oculi

Question 17

Answer 17

blepharitis- inflammation of meibomian gland

Question 18

Answer 18

chalazion- block of meibomian gland (tarsal) that form little tumor

Question 19

Answer 19

ectopic cilia

Question 20

Answer 20

trichiasis

Question 21

Answer 21

distichiasis

Question 22

Answer 22

distichiasis

Question 23

looks like a raspberry

Answer 23

follicular conjunctivitis

lymphoid follicles on the nictitating membrane are inflammed

Question 24

Answer 24

Question 25

cherry eye

Answer 25

lacrimal gland of 3rd eyelid inverts

Question 26

what makes up each layer of tears

Answer 26

**superficial lipid layer**: tarsal/meibomian gland **aqueous layer**: lacrimal and lacrimal gland of the 3rd eyelid **inner mucoid layer**: cunjunctival goblet cells

Question 27

what makes up tear film?

Answer 27

Question 28

normal schirmer tear test

Answer 28

10-25 in 1 min ## Footnote measures aqueous layer of tear film

Question 29

jones test

Answer 29

fluorescein (test drainage of nasolacrimal duct)

Question 30

fibrous tunic is made of ---

Answer 30

cornea and sclera

Question 31

vascular tunic is made of

Answer 31

uvea: iris, ciliary body, choroid

Question 32

nervous tunic is made of

Answer 32

neuroretina retinal pigment epithelium (RPE)

Question 33

layers of the cornea

Answer 33

many layered epithelium thick stroma descemet's membrane single layer endotheium

Question 34

how to examine corneal layers

Answer 34

biomicroscopy (slit- lamp)

Question 35

how to see ulcer

Answer 35

fluorescein test Detects erosions of the corneal epithelium by staining the **corneal stroma** yellow-green. Does NOT stain the corneal epithelium Does NOT stain Descemet membrane

Question 36

flurorescein test will not stain

Answer 36

corneal epithelium or descemet membrane will only bind to corneal stroma if their is damage/ucler in epithelium

Question 37

path of aqueous humor

Answer 37

made in **ciliary body** into **posterior chamber** up through **anterior chamber** leaves through **irido corneal angle**

Question 38

normal IOP for dog

Answer 38

10-25 mmHG

Question 39

how to view iridocorneal angle

Answer 39

gonioscopy

Question 40

image through goniolens

Answer 40

gonilens used to see iridocorneal angle

Question 41

what muscle dilates pupil

Answer 41

radial under sympathetic tone

Question 42

what muscle contricts the pupil and what controls it

Answer 42

circular M. constrictor pupillae parasympathetic ## Footnote eye under para control- always slightly constricted pupil (miosis)

Question 43

mydriasis

Answer 43

dilation of pupil dilator contracts constrictor relaxes

Question 44

what are two mydriatics

Answer 44

phenylephrine (sympathomimetic) tropicamide (parasympatholytic)

Question 45

how to exam lens of eye

Answer 45

direct opthalmoscope +12 to +8 diopters or slit lamp

Question 46

retinal veins or arteries are bigger

Answer 46

veins

Question 47

how does tapetum work

Answer 47

shiny part of back of eye light come in hits rods and cones light continues through **NON pigemented RPE** hits tapetum and **bounces back** can hit rods and cone again

Question 48

tapetal fundus or non tapetal fundus will have non pigmented RPE

Answer 48

tapetal fundus (shiny part of eye) non pigemented RPE allows light to go through hit tapetum, bounce back and restimulate rods and cones

Question 49

how to view optic disc

Answer 49

direct ophthalmoscope set to 0 panoptic ophthalmoscope (gives wider view) indirect ophthalmoscopy (even wider view but opside down)