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The optic system of the eye consists of
The three coats of the eye are
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:
The part of the eye that bends the light the most is:
If runway slopes downwards, what is a pilot is likely to do:
A sloping cloud formation, an obscured horizon and a dark scene spread with ground lights and stars can create an illusion
Suppose you make an approach to a runway which is narrower than standard. Which of the following errors are you likely to commit?
What should a pilot do to keep his night vision (scotopic vision)?
Why should a pilot turn his attention to the instruments when approaching on a snowed up, foggy or cloudy winterday? Because
Illuminated anti-collision lights in IMC
A shining light is fading out (i. e. when flying into fog, dust or haze). What kind of sensation could the pilot get?
To prevent the "autokinetic phenomena", the following can be done:
A pilot is used to land on small and narrow runways only. Approaching a larger and wider runway can lead to :
The impression of an apparent movement of light when stared at for a relatively long period of time in the dark is called
The time for dark adaptation is
Which problem may occur, when flying in an environment of low contrast (fog, snow, darkness, haze)?
Under these conditions it is:
A pilot approaching an upslope runway
The area in front of a threshold descends towards the threshold.
Possible danger is:
Sunglasses with variable filtration (phototrope glasses)
What misjudgement may occur if an airplane is flying into fog, snow or haze?
Depth perception when objects are close (< 1 m) is achieved through
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