Ophthalmology Anatomy

Question 1

what ligament holds the eye in place? what else does?

Answer 1

suspensory ligament orbital fat

Question 2

features of a # zygoma? why?

Answer 2

diplopia eye drops into socket due to suspensory ligament attachments

Question 3

cornea reflex ?

Answer 3

afferent (sensory) is CN V(1) efferent is CNVII

Question 4

what is the vestibuloocular reflex?

Answer 4

eyes move away from direction of head movement

Question 5

what is the oculocardiac reflex?

Answer 5

bradycardia when there is increased tension on extraocular muslces

Question 6

parasympathetic affects on the eye?

Answer 6

ciliary muscles relax lens becomes thin able to see close up

Question 7

sympathetic affects on the eye?

Answer 7

ciliary muscles contract lens becomes short and fat able to see far away

Question 8

CNs from midbrain?

Answer 8

III IV

Question 9

CNs from pons?

Answer 9

V VI VII VIII

Question 10

CNs from medulla?

Answer 10

IX X XI XII

Question 11

what does CNIII supply?

Answer 11

SR, MR, IR, IO LPS sphincter pupillae

Question 12

supply of lacrimal gland?

Answer 12

lacrimal nerve (branch of CNV1)

Question 13

Supply of SO and LR?

Answer 13

SO - CNIV LR - CNVI

Question 14

supply of orbicularis oculi?

Answer 14

CN VII

Question 15

what are the components of orbicularis oculi? what do they do?

Answer 15

palpebral - blink orbital - close tightly

Question 16

what produces CSF?

Answer 16

choroid plexus

Question 17

layers of the meninges?

Answer 17

dura arachnoid pia

Question 18

route of CSF?

Answer 18

lateral ventricles 3rd 4th subarachnoid space

Question 19

what do rods do?

Answer 19

see in dim light

Question 20

what do cones do?

Answer 20

see in normal light

Question 21

what makes up the uvea?

Answer 21

iris choroid ciliary body

Question 22

where do the rectus eye muscles originate from?

Answer 22

common tendinous ring

Question 23

why do you get painful eye movements in ON?

Answer 23

CN III nerve sheet also attaches to common tendinous ring also inflamed

Question 24

blood supply of eye?

Answer 24

internal carotid opthalmic artery

Question 25

venous drainage of eye?

Answer 25

superior opthalmic vein cavernous sinus

Question 26

what CNs pass through SOF?

Answer 26

CN IV, III, VI

Question 27

what passes through the optic canal?

Answer 27

optic nerve opthalmic artery

Question 28

what passes through the inferior orbital fissure?

Answer 28

opthalmic vein

Question 29

what bones join together at the orbital rim?

Answer 29

maxilla zygoma frontal bone

Question 30

what happens in a blowout #?

Answer 30

herniation of the orbital contents through one of its wals

Question 31

label

Answer 31

Question 32

label

Answer 32

Question 33

label

Answer 33

Question 34

label

Answer 34