Pilotenausbildung "Human Performance - Eye"

We know that, in the mechanism of sight, the retina allows for :

Rods (scotopic visual cells) allow for :

Visual perception of depth at close to medium distance is primarily due to

Autokinetic illusion is:

Rising the perceptual threshold of a sensory organ means:

The amount of light which strikes the retina is controlled by:

When focussing on near objects:

The ability of the lens to change its shape is called:

The mechanism of accommodation is caused by:

Presbyopia is:

Visual acuity during flight at high altitudes can be affected by:

1. anaemia

2. smoking in the cockpit

3. carbon monoxide poisoning

4. hypoxia

Glaucoma

1. can lead to total blindness

2. can lead to undetected reduction of the visual field

3. reduces visual acuity in its final stage

Glaucoma is:

Glaucoma is characterised by:

1. disturbed light adaptation

2. progressive narrowing of the visual field

3. insidious onset and concealed progression

4. an increase in intra-ocular pressure

The peripheral vision is important for:

Although we have a field of vision of more than 180° it is important during flight to use the scan ning technique, because

The time an eye needs to adapt fully to the dark is about:

The photosensitive cells beeing responsible for night vision are called:

When flying through a thunderstorm with lightning you can protect yourself from flashblindness by:

a) turning up the intensity of cockpit lights

b) looking inside the cockpit

c) wearing sunglasses

d) using face blinds or face curtains when installed

Which scanning technique should be used when flying at night?

Visual disturbances can be caused by:

1. hyperventilation

2. hypoxia

3. hypertension

4. fatigue

Empty field myopia is caused by:

When a pilot is starring at an isolated stationary light for several seconds in the dark he might get the illusion that:

When you stare at a single light against the dark (f.e. an isolated star) you will find the light appears to move after some time. This phenomenon is called:

How is haze effecting your perception?

The 'Black hole' phenomenon occurs during approaches at night and over water, jungle or desert. When the pilot is lacking of visual cues other than those of the aerodrome there is an illusion of

You fly VFR from your home base (runway width 27 m), to an international airport (runway width 45 m). On reaching your destination there is a risk of performing a:

You fly VFR from your home base (runway width 45 m) to a small airfield (runway width 27 m). On reaching your destination there is a risk of performing a:

How long does it take to develop full night vision adaption?

The optic system of the eye consists of

The three coats of the eye are

Shortsightedness means

The onset of presbyopia depends

The following statements are true except

Color vision is performed by three different classes of cones:

The normal visual acuity allows discrimination of two different points under an angle of

Which one of the following statements is correct regarding the use of cockpit lighting for night flight?

If the pilot of an aircraft approaches a runway that is wider than normal, one of the possible consequences could be that:

Below are four statements about rods and cones. Which one is true?

Visual acuity is best within ….. degrees of the fovea and reduces ….. towards the periphery of vision: