Vision

Question 1

What are the two types of photoreceptors and what is their function?

Answer 1

Cones - Day vision
Rods - Night vision

Question 2

Name three types of vision and describe their functions.

Answer 2

Scotopic - Night vision
Photopic - Day vision
Mesotopic - Transition

Question 3

What is the process of dark adaptation and how long does it take?

Answer 3

The eyes become more sensitive to low levels of illumination.
Maximum for optimal dark adaptation is 30-45 mins.

Question 4

Name three techniques for improving night vision adaptation.

Answer 4

Scanning techniques
Bright lights
Red lights
Dark adaptation

Question 5

Can you name two common vision defects?

Answer 5

Myopia
Hyperopia
Presbyopia
Astigmatism

Question 6

What is solar glare?

Answer 6

Intrusive light source

Question 7

What does LASER stand for?

Answer 7

Light
Amplification
Stimulated
Emission
Radiation

Question 8

What types of eye wear are approved for use in the RCAF?

Answer 8

CF sunglasses
Visors
Not miroir lenses
Not bright colours

Question 9

What are two benefits of using a visor?

Answer 9

Laser protection
Fod protection
Bird protection

Question 10

What are four measures that can be taken to reduce the hazard of a LASER?

Answer 10

Block the source
Cockpit lighting
Turn away
Do not look at beam

Question 11

What should aircrew do when a military aircraft is illuminated by a LASER during a non-training situation?

Answer 11

Look away, Inform ATC, file a flight safety and seek medical attention.