Anatomy Flashcards Preview

Ophthalmology > Anatomy > Flashcards

Flashcards in Anatomy Deck (24):
1

Give the 3 layers of the eyeball wall

1. sclera and cornea
2. UVEA (choroid, iris and czilary body)
3.retina

2

What attaches the lens to the ciliary body?

suspensory ligaments

3

When is the lens relaxed?

when looking at something far away
- sympathetic, relax czilary muscle

4

When is the lens tight?

When the parasympathetic brings about accomodation to look at something near

5

Where does light focus on the eye?

retina

6

Which nerve supplies tip of the nose?

CNV1 (opthalmic)

7

Give some causes of compression of cervical part of sympathetic trunk that could result in horners?

root of neck trauma
carotid dissection
pancoast tumour
engorged internal jugular vein
deep cervical lymph node mets

8

What covers
a) iris
b) sclera

a) cornea
b) conjunctiva

9

What divides the chambers of the eye?

the lens

10

Which angle is of importance for aqueous drainage?

iridocorneal

11

What is the centre of the macula?

the fovea

12

Where is the greatest density of cones?

macula

13

What are the three layers of the retina?

photoreceptors
ganglion cells
axons

14

Does the optic disc contain photoreceptors?

no

15

Name the end artery of the eye

the central retinal artery

16

Where do the intraocular muscles insert into?

the sclera

17

How do you test the abducens nerve?

with eye movements the lateral rectus does
- abduction

18

What eye movements can superior rectus do?

elevation (when eye is abducted)

19

What eye movements can inferior rectus do?

depression (when eye is abducted

20

How do you test the trochlear nerve?

eye movements done by superior oblique
- depression (when in adduction)

21

What eye movements can medial rectus do?

adduction

22

What eye movements can the inferior oblique do?

elevation (when in adduction)

23

Which muscles bring about pure elevation?

superior rectus and inferior oblique

24

Which muscles bring about pure depression?

superior oblique and inferior rectus