Ophthalmology

Question 1

What part of the orbit is most suseptable to blow out fractures?

Answer 1

Medial wall

and

Floor

Question 2

What are the two parts of the orbicularis oculi

Answer 2

Orbital and palpebral parts

Question 3

What muscles moves the eye lid?

Answer 3

Levator paplebrae superioris

Question 4

What are the glands under the eyelid called and what do they secrete?

Answer 4

Tarsal glands

Secrete lipids

Question 5

What is the junction betweent the cornea and sclera called?

Answer 5

The limbus

Question 6

What is the outermost layer of the eye?

Answer 6

Conjunctiva

Question 7

What supplies the lacrimal gland?

Answer 7

Facial nerve

Question 8

What is the tear drainage hole called?

Answer 8

Canaliculi

Question 9

What are the three layers of the eye?

Answer 9

Fibrous outer layer

Uvea

Retina

Question 10

What makes up the fibrous layer of the eye?

Answer 10

Sclera and Cornea

Question 11

What makes up the uvea ?

Answer 11

Iris

Ciliar body

Choroid

Question 12

What are the segments and chambers of the eye?

Answer 12

Anterior segment

Anterior chamber between cornea and iris

Posterior chamber beween iris and suspensory ligaments

Posterior segment

Question 13

What type of humour is in the anterior segment and what type is i the posterior segment?

Answer 13

Aqueous humour anteriorly

Vitreous humour posteriorly

Question 14

What is the blind spot?

Answer 14

The optic disc

Question 15

What are the layers of the retina?

Answer 15

Axons of ganglion cells

Ganglion cells

Photoreceptors

Question 16

What is the arterial supply to the fundus?

Answer 16

Ophthalmic artery

(branch of the internal carotid artery)

Question 17

What are the vessles in the optic nerve called?

Answer 17

Central artery/vein of the retina

Question 18

What are the extraocular muscles?

Answer 18

Superior, medial, inferior rectus

Lateral rectus

superior oblique

Inferior oblique

Levator palpebrae superioris

Question 19

Where do the extraocular muscles origonate from?

Answer 19

Common tendinous ring

Question 20

What is the H for testing eye movements?

Answer 20

Question 21

What nerve supplies the cornea, conjunctiva and upper lid

What nerve supplies the lower eyelid

Answer 21

V1 upper eye

V2 lower eye

Question 22

What is the afferent part of the corneal reflex and what is the efferent part?

Answer 22

Afferent part - tigeminal nerve V1

Efferent part - Facial nerve

Question 23

How do sympathetics reach the levator palpebrae superioris?

Answer 23

Internal carotid plexus

Question 24

What is the name for a non-physiologically constricted pupil?

Answer 24

Miotic pupil

Question 25

What is a fixed "pin point" pupil a sign off?

Answer 25

Opiate drugs

Question 26

What is a "fixed-dilated" pupil a sign off?

Answer 26

Oculomotor pathology

Question 27

What nerve is responsible for the afferent and efferent components of the pupillary light reflex?

Answer 27

afferent - optic nerve Efferet - oculomotor nerve

Question 28

What happens when cillary muscles contract?

Answer 28

Lens becomes squished and gets thicker used for near vision

Question 29

Does contraction or relaxation required parasympathetic activity?

Answer 29

Contraction