The Eye (4) Flashcards
1
Q
The eye is a complex organ that ____, ___ and ____ light to ____ _____.
A
filters, focuses, and converts light to electrical impulses.
2
Q
Cornea
A
covers eye and protects the lens
3
Q
Iris
A
aperture which controls the amount of light that enters the eye
4
Q
Aqueous & Vitreous Humour
A
Aqueous = sac of fluid between iris/lens and cornea Vitreous = sac of fluid between the lens and retina
5
Q
Retina
A
field of optic nerve endings that translate light into electrical impulses
6
Q
Fovea
A
central part of Macula, responsible for the most sensitive part of our vision
7
Q
Optic Nerve
A
connect the retina to the brain (coaxial cable)
8
Q
Macula
A
area of retina responsible for central vision
9
Q
Rod cells
A
- located in retina, lesser in macula
- detect light
10
Q
Cone cells
A
- located in macula, concentrated in Fovea
- detect colour
- 3 types
- 445nm, blue
- 535nm, green
- 575nm, red
