Parts Of The Eye Flashcards
1
Q
Sclera
A
Tough outer coating of the eye
Visible, white
2
Q
Cornea
A
Transparent window
Refracts light into the eye
3
Q
Iris
A
Coloured ring of tissue
Controls the diameter of the pupil
4
Q
Pupil
A
Lets light through
Black to stop light escaping from the eye
5
Q
Choroid
A
Dark layer
Contains many pigment cells
Pigment cells stop light being reflected round the eye
6
Q
Retina
A
Light sensitive
Light energy is transfixed into electrical energy of the nerve impulses
Contains many rods and cones
7
Q
Fovea
A
Cones are most concentrated here
Give sharper images than rods
