SCI HUMAN EYE

Question 1

• the only conscious organ that allows vision.
• is an organ which reacts to light for several reasons.

Answer 1

HUMAN EYE

Question 2

• the part of the brain where the visual process occurs.

Answer 2

OCCIPITAL LOBE

Question 3

• an elastic, double-convex structure that focuses light onto the retina.

Answer 3

LENS

Question 4

• the light-sensitive part of the eye where the image is focused.

Answer 4

RETINA

Question 5

• the colored part of the eye with a hole.
• it contracts and expands to allow the pupil to become larger or smaller.

Answer 5

IRIS

Question 6

• a hole or circular opening at the center.
• allows light to enter the retina.

Answer 6

PUPIL

Question 7

• a tough, white outer coating that protects the eyeball and helps maintain its shape.

Answer 7

SCLERA

Question 8

• the clear, protective outer layer that covers the iris and pupil.

Answer 8

CORNEA

Question 9

• are the internal fluids of the eye.

Answer 9

AQUEOUS HUMOR AND VITREOUS HUMOR

Question 10

• are the photoreceptors.

Answer 10

RODS AND CONES

Question 11

• a bundle of nerve fibers.

Answer 11

OPTIC NERVE

Question 12

• the ability to refract or focus light of the cornea is greater than the lens

Answer 12

REFRACTIVE POWER

Question 13

• control the shape and thickness of the lens’ curvature.

Answer 13

CILIARY MUSCLES

Question 14

• the process of focusing on distant or closer objects.

Answer 14

ACCOMMODATION

Question 15

• an eye-focusing disorder that occurs when the eye does not focus light correctly onto the retina, resulting in blurred vision.
• two most common types of refractive errors are myopia and hypermetropia / hyperopia

Answer 15

REFRACTIVE ERROR

Question 16

• is a vision condition in which nearby objects look clear whereas distant objects look blurred.
• when the cornea is too curved, the lens is too thick, or the eyeball is too long.

Answer 16

MYOPIA

Question 17

• is a vision condition in which distant objects look clear whereas nearby objects look blurred.
• occurs when the eyeball is too short, the cornea is flat, or the lens has an irregular shape.

Answer 17

HYPEROPIA