Chapter 6.3 - Hearing and Vision

Question 1

The Outer and Middle Ear are mainly responsible for what?

Answer 1

Transmission of Sound.

Question 2

The Inner Ear is mainly responsible for what (2)?

Answer 2

• Analysis of Sound Waves.

- Balance.

Question 3

Name two major components of the Outer Ear?

Answer 3

• Ear Canal.

- Eardrum.

Question 4

Name one major component of the Middle Ear?

Answer 4

Eustachian Tube.

Question 5

Name two major components of the Inner Ear?

Answer 5

• Cochlea.

- Vestibular Apparatus.

Question 6

What is the Cochlea main responsibility?

Answer 6

Hearing.

Question 7

What is the Vestibular Apparatus main responsibility?

Answer 7

Balance.

Question 8

Which part of the Ear facilitates equalising pressure?

Answer 8

Eustachian Tube.

Question 9

Name the two light-sensitive cells in the Retina?

Answer 9

• Rods.

- Cones.

Question 10

Which light-sensitive cell focuses on Colour, Far-Away Objects and is used for Day Vision?

Answer 10

Cones.

Question 11

Which light-sensitive cell focuses on Peripheral Vision and Night Vision?

Answer 11

Rods.

Question 12

Name three factors that decreases the oxygen for Night Vision?

Answer 12

• Altitude.
• Smoking.
• Carbon Monoxide.

Question 13

How long does it take the eyes to adjust to sunlight?

Answer 13

30 seconds.

Question 14

How long does it take the eyes to adjust to darkness?

Answer 14

30 minutes.

Question 15

True or False. It is better to look at an object slightly to one side at night?

Answer 15

True.

Question 16

What is the term given for short-sightedness?

Answer 16

Myopia.

Question 17

What is the term given for long-sightedness?

Answer 17

Hyperopia.

Question 18

What is the term given where the focusing power of the eye weakens with age?

Answer 18

Presbyopia.

Question 19

True or False. It may take the eye several seconds to refocus when switching views between near, intermediate and distant visuals?

Answer 19

True.

Question 20

What is the term given when the eyes overshoot/undershoot the visual target when focusing?

Answer 20

Visual Fatigue.

Question 21

Name two symptoms of Visual Fatigue?

Answer 21

• Blurred Vision.
• Heavy Eyelid Sensation.
• Frontal Headaches.
• Sore Eyes.

Question 22

What is Empty-Field Syndrome?

Answer 22

The cause of focusing on a distance without specific object in sight. The eyes relax so that you only see a couple of metres ahead of you.

Question 23

How can a Pilot counteract Empty-Field Syndrome?

Answer 23

By finding an object before scanning the sky. This allows the eyes to condition itself for distance vision.

Question 24

How can Haze affect vision?

Answer 24

It can make a target appear further away than it actually is.

Question 25

How can Glare affect vision?

Answer 25

The bright light will reduce the ability for the eyes to see.

Question 26

The effects of Glare, Haze or Drizzle are all accentuated by which factor?

Answer 26

Dirty Windscreen.

Question 27

True or False. The position of the sun can also be a limitation to a Pilot’s vision?

Answer 27

True.