Anatomy

Question 1

Coats of the eyeball

Answer 1

Fibrous coat- anterior 1/6: cornea
Posterior 5/6: sclera
Vascular coat- iris, ciliary body and choroid
Nervous coat- retina

Question 2

Anterior segment contents

Answer 2

Crystalline lens and structures anterior to it- iris, cornea and two aqueous humour filled spaces: anterior and posterior chambers

Question 3

Anterior chamber boundaries

Answer 3

Anteriorly: back of cornea
Posteriorly: anterior surface of iris and part of ciliary body
Communicates with the posterior chamber through the pupil

Question 4

AC depth

Answer 4

2.5mm

Question 5

Aq humour content

Answer 5

0.25ml

Question 6

Posterior chamber boundaries

Answer 6

Anteriorly: posterior surface of iris and part of ciliary body
Posteriorly: crystalline lens and its zonules
Laterally: ciliary body

Question 7

Aq humour content

Answer 7

0.06ml

Question 8

Posterior segment structures

Answer 8

Structure posterior to lens- vitreous humour, retina, choroid and optic disc

Question 9

Visual pathway

Answer 9

Retina
Optic nerve
Optic chiasma 
Optic tract 
LGB
Optic radiation
Visual cortex

Question 10

Appendages of the eye

Answer 10

Eyelids
Eyebrows
Conjunctive
Lacrimal apparatus

Question 11

Arteries

Answer 11

Ophthalmic artery

Question 12

Vein

Answer 12

Central retinal vein- retina

Anterior ciliary vein, short posterior ciliary vein and venae verticosae- uveal tissue

Question 13

Nerves

Answer 13

Sensory nerve- ophthalmic nerve, three branches
Lacrimal nerve
Frontal nerve
Nasociliary nerve

Motor nerves
3rd, 4th and 6th cranial nerves

Autonomic nerves
Parasympathetic nerves
Edinger- Westphal nucleus (midbrain)
Salivatory nucleus (pons)
Ciliary ganglion

Sympathetic nerves
Preganglionic fibers
Postganglionic fibers

Question 14

Development of eye

Answer 14

Commence around day 22