Lab 8

Question 1

What is contained in the fovea centralis?

Answer 1

Cones

Question 2

What is myopia and how is it caused?

Answer 2

Nearsightedness; when shape of eye is too elongated

Question 3

What is hyperopia and what causes it?

Answer 3

Farsightedness; when shape of eye is too short

Question 4

What is astigmatism and what causes it?

Answer 4

Imperfection of cornea; genetics

Question 5

What part of the eye is actually altered during LASIK?

Answer 5

Cornea

Question 6

Where is the anterior eye fluid(aqueous humor) produced?

Answer 6

Ciliary body

Question 7

How does glaucoma develop?

Answer 7

Too much aqueous humor is produced

Question 8

How are these corrected by surgery?

Answer 8

Stops further damage

Question 9

What is a cataract?

Answer 9

Clouding of the lens

Question 10

What are the signs/ symptoms?

Answer 10

Vision is blurry, difficulty seeing in the dark, sensitivity to bright lights

Question 11

How is a cataract corrected in surgery?

Answer 11

Taking out one one and putting in a artificial lens

Question 12

Tapetum lucidum

Answer 12

Makes cow and cat eyes reflect light; improves their night vision

Question 13

Rods

Answer 13

Low light/ black and white vision

Question 14

Cones

Answer 14

Bright light/ color vision

Question 15

Vestibule

Answer 15

Functions in balance and equilibrium

Question 16

Cochlea

Answer 16

Functions in hearing