The Eye

Question 1

what are the whites of the eyes called, and what are they covered by on their surface

Answer 1

the sclera, covered by conjunctiva

Question 2

what are the iris and pupil covered by

Answer 2

the cornea

Question 3

where is the limbus found on the eye surface, and what is another name for it

Answer 3

it is the junction between the cornea and the conjunctiva

also called the corneoscleral junction

Question 4

describe the location if the lacrimal gland

Answer 4

superolateral to the eye

Question 5

what is the inside of the lower eye lid covered by

Answer 5

conjunctiva

Question 6

where is the lacrimal lake found

Answer 6

in the very medial corner of the eye

ie the tear duct

Question 7

what is the border between the conjunctiva of the sclera and the conjunctiva of the lower eye lid called

Answer 7

conjunctival fornix

Question 8

what are the different layers of the eye, from outer to inner

Answer 8

fibrous (outer), uvea(vascular/middle), retina(photosensitive/inner layer)

Question 9

what are the 2 different parts of the fibrous layer of the eye

Answer 9

sclera and cornea

Question 10

what part of the eye are the eye muscles attached to

Answer 10

the sclera

Question 11

what are the different parts of the uvea layer of the eye

Answer 11

iris, ciliary body, choroid

Question 12

briefly describe the function of the ciliary body and the choroid

Answer 12

ciliary body = controls iris, shape of lens and aqueous humour
choroid = nutrition and gas exchange

Question 13

what are the 3 main parts of the retina layer of the eye

Answer 13

the retina, macula and optic disc

Question 14

describe how the eye is divided into the anterior and posterior segement

Answer 14

anterior segment = in front of lens

posterior segment = behind the lens(2/3rds of eye)

Question 15

what is the anterior segment of the eye divided into

Answer 15

the anterior chamber(between cornea and iris) and posterior chamber(between iris and suspensory ligaments)

Question 16

what segment of the eye contains the vitreous body/humour, and what is commonly found there

Answer 16

the posterior segment, common location for ‘floaters’

Question 17

describe the circulation of aqueous in the eyes after it is secreted from the ciliary body

Answer 17

aqueous circulates in posterior chamber(nourishes lens), then passes through pupil to anterior chamber(nourishes cornea), then reabsorbed at iridocorneal angle

Question 18

where is the aqueous in the eye reabsorbed into

Answer 18

into scleral venous sinus(Canal of Schlemm)

Question 19

what are the only artery and vein supplying the retina

Answer 19

central artery of retina(an end artery) and central vein of retina

Question 20

what arteries are involved in the supply of the eye

Answer 20

ophthalmic artery, ciliary arteries, central artery of retina

Question 21

what veins are involved in the venous drainage of the eye

Answer 21

inferior and superior ophthalmic veins, both drain into cavernous sinus, orbit also drains anteriorly into facial vein