AP105

Question 1

What part of your eye has a nighttime blind spot and why?

Answer 1

The fovea, because it has a high concentration of cones

Question 2

What part of your eye is best for night vision and why?

Answer 2

The parafovea, because is has a high concentration of rods

Question 3

What are the 3 types of vision?

Answer 3

1. Photopic
2. Mesotopic
3. Scoptopic

Question 4

What type of vision is associated with night vision?

Answer 4

Scotopic

Question 5

What is a technique to overcome the difficulties in seeing at night and how do you execute it?

Answer 5

The “Z” technique or the diamond pattern technique and you execute it why looking 5-10 degrees off center in a Z pattern or diamond pattern

Question 6

What are the two visual fields?

Answer 6

1. Ambient (Peripheral)

2. Focal (Central)

Question 7

What is the focal field used for?

Answer 7

Central vision and distance and depth perception

Question 8

What is the ambient field used for?

Answer 8

Motion and attitude cues, subconscious processing of information

Question 9

What is the ambient field bad at

Answer 9

Visual acuity

Question 10

What are the two types of factors that cause visual illusions and describe them

Answer 10

1. Physical factors such as false horizons, sun angles and shadows, and terrain
2. Perceptual Factors: Errors in your perceptual judgement