Structure and Function of the Eye (FWONG)

Question 1

What do you call the space where the eye ball is between the upper and lower eye lids

Answer 1

palpebral fissure

Question 2

what do you call the two tapering ends of the eye lids where the upper and lower eye lids meet

Answer 2

lateral and medial canthus

Question 3

What is the black dot? what is the coloured part around the black dot? what is the white bit of the eye

Answer 3

Black dot: pupil
Coloured part: iris
White part: sclera

Question 4

What is the caruncle

Answer 4

the red bit of ‘flesh’ near the medial canthus

Question 5

What do you call the margin between the cornea (which is on top of the iris) and the sclera (white bit)

Answer 5

limbus

Question 6

what is the tear sac also called

Answer 6

lacrimal sac

Question 7

What is superficial above the cornea and how many layers does this structure have

Answer 7

tear film is above the cornea
it has 3 layers:
Oily, water, mucinous layer (from superficial to deep)

Question 8

What fluid is the majority of the eye ball filled with

Answer 8

vitreous humour (not to be confused with aqueous humour which is present in the anterior and posterior chamber)

Question 9

What is continuous with the retina

Answer 9

optic nerve

Question 10

What are the 3 layers of the eye

Answer 10

from superficial to deep
Sclera - connective tissue, good for support. Hard, tough and opaque

Choroid- highly vascularised layer with a lot of blood vessels. Pigmented as well

Retina- continuous with optic nerve. Requires a lot of energy to function and so it needs the blood from the choroid layer