Vision

Question 1

FOV of the human eye?

Answer 1

130 degrees vertically by 160 degrees horizontally

Question 2

Cone cells

Answer 2

Primarily for day (high intensity light vision)

Question 3

Rod cells

Answer 3

For night (low intensity light vision)

Question 4

Night vision dark adaptation?

Answer 4

30 to 45 mins depending on ambient light

Question 5

Day blind spot?

Answer 5

Covers area of 5.5 to 7.5 degrees and is located about 15 degrees from the fovea

Question 6

What are the types of vision?

Answer 6

• Photopic
• Mesopic
• Scotopic

Question 7

Night blind spot?

Answer 7

Area of 10 to 15 degrees wide in the center of the visual field

Question 8

What are the visual illusions?

Answer 8

-Vection
-False Horizon
-Confusion w/ Ground Lights
-Height-Depth Perception
-Crater
-Structural
-Size-Distance
-Size Constancy
-Shape Constancy
-Aerial Perspective
-Autokensis

Question 9

Vection?

Answer 9

Falsely perceived motion of oneself when no physical motion is actually occurring

Question 10

False Horizon?

Answer 10

When a pilot confuses a wide sloping plane of reference such as sloping cloud tops, mountain ridges, or so-called ‘cultural’ lighting at night (such as a coastline or highway) with the true horizon

Question 11

Confusion with Ground Light?

Answer 11

When a pilot mistakes ground lights for stars

Question 12

Height-Depth perception?

Answer 12

Due to absent or insufficient visual cues can cause crew members to misjudge depth perception