Lab 6

Question 1

what structures are in the fibrous tunic

Answer 1

sclera, cornea

Question 2

what structures are in the vascular tunic

Answer 2

choroid, colliery body, iris

Question 3

what structures are in the neural tunic

Answer 3

retina

Question 4

What is a cataract

Answer 4

cloudy lens due to uv damage

Question 5

what is emmetropia

Answer 5

normal eye

Question 6

hyperopia

Answer 6

far sighted, near objects are blurry b/c focal plane falls behind the retina

Question 7

myopia

Answer 7

nearsighted, far objects are blurry, focal plane falls before the retina

Question 8

presbyopia

Answer 8

lens class elastic, can’t accommodate for near, need glasses

Question 9

astigmatism

Answer 9

irregular cornea or lens, some blurry parts

Question 10

Protanopia

Answer 10

red-green colour blind where red cones lack

Question 11

deuteranopia

Answer 11

red-green colour blind where green cones lack

Question 12

stereopsis

Answer 12

cerebral cortex uses both eyes for 3 dimensional vision, depth perception

Question 13

diplopia

Answer 13

double vision

Question 14

Function of sclera

Answer 14

protect the eye

Question 15

cornea

Answer 15

transparent, refracts light

Question 16

choroid

Answer 16

nourishes sclera

Question 17

iris

Answer 17

pupillary constrictor, dilator to control light

Question 18

ciliary body

Answer 18

changes shape of lens, makes aqueous humour

Question 19

retina

Answer 19

convert energy to ATP

Question 20

macular lutea

Answer 20

detailed colour vision

Question 21

fovea centralis

Answer 21

only cones

Question 22

anterior segment, aqueous humour

Answer 22

nourishes cornea, lens

Question 23

canal of schlemm

Answer 23

drains aqueous humour

Question 24

suspensory ligaments

Answer 24

connects ciliary body to lens

Question 25

lens

Answer 25

refracts light

Question 26

pupil

Answer 26

hole that allows light through