Vision

Question 1

Lacrimal Apparatus Purpose

Answer 1

Produce lacrimal fluid to protect eye and keep it moist

Question 2

Sclera vs cornea

Answer 2

Sclera is white and large, cornea is clear

Question 3

Accomodation

Answer 3

Changing of the lens’ shape to focus light

Question 4

Rods

Answer 4

dim, blue light

Question 5

Cones

Answer 5

bright, red/green light

Question 6

Macula Lutea and fovea centralis

Answer 6

Spot of retina with most rods/cones. Fovea centralis has most cones.

Question 7

Eye obliques

Answer 7

also move eye laterally

Question 8

Retina is different because

Answer 8

It develops separately, as part of optic nerve.

Question 9

Path of light through eye

Answer 9

Through cornea and aqueous humor, through pupil, where the sphincter pupillae and dilator pupillae adjust, pass through lens, then vitreous humor, to retina. It strikes rod/cone, travels along bipolar cell, ganglion cell that makes up optic nerve, through the optic disk opening, to optic chiasm where it crosses over and follows optic tracts to the thalamus. It goes to the lateral geniculate nucleus to the superior colliculus, then the association fibers that go to the visual cortex of the occipital lobe.