Eyesight - Kafli 5

Question 1

What part of the eye bends the most light?

a. The cornea
b. The lens
c. The pupil
d. The retina

Answer 1

a. The cornea

Question 2

Which part of the eye has the best visual acuity?

Answer 2

Fovea

Question 3

The resolving power of the fovea decreases rapidly at only ………………… from its centre.

a. 5°
b. 13° to 16°
c. 3°
d. 2° to 3°

Answer 3

a. 5°

Question 4

It is a term used when the eye, if it has nothing on which to focus will tend to focus between just under _ to _ metres

Answer 4

1 - 1.5 meters

Question 5

Cones are mostly concentrated at the..

Answer 5

fovea

Question 6

What part of the spectrum should sunglasses filter out?

a. The red and UV end of the spectrum
b. The blue and UV end of the spectrum
c. All high intensity light
d. UV only

Answer 6

b. The blue and UV end of the spectrum

Question 7

Is a pilot allowed to fly wearing bifocal contact lenses?

Answer 7

No

Question 8

What causes long or short sightedness?

a. Presbyopia
b. Astigmatism
c. Distortion of the eyeball
d. Distortion of the cornea

Answer 8

c. Distortion of the eyeball

Question 9

What is the recommended course of action if encountering an electrical storm during flight?

a. Pull the visors down
b. Turn the cockpit lights down
c. Turn the cockpit lights to full
d. Put on sunglasses if available

Answer 9

c. Turn the cockpit lights to full

Question 10

Dark adaption takes about __ min. for the rods and ___ min. for the cones.

Answer 10

30 min, 7 min.

Question 11

The maximum number of rods are found ………………… from the fovea.

a. 10°
b. 20°
c. 15°
d. 30°

Answer 11

a. 10°

Question 12

The amount of light allowed to enter the eye is controlled by the ___.

Answer 12

iris.

Question 13

Hypermetropia is caused by a …………………. eyeball and is corrected by a ……………….. lens.

Answer 13

shortened, convex

Question 14

Astigmatism is normally associated with the:

a. retina
b. fovea
c. iris
d. cornea

Answer 14

d. cornea

Question 15

Hvað er astigmatism?

Answer 15

Astigmatism causes blurred vision. It occurs when the cornea (the clear front cover of the eye) is irregularly shaped or sometimes because of the curvature of the lens inside the eye.

Question 16

Does colour blindness affect acuity?

Answer 16

No

Question 17

Using the BMI formula, when will pilots be considered overweight?

Answer 17

25 males, 24 females.

Passaðu þig að ruglast ekki á obese og overweight.

Question 18

What is the weekly level of alcohol consumption that will cause physical damage?

a. Consuming 22 units for men and 14 units for women
b. Consuming 21 units for men and 15 units for women
c. Consuming 24 units for men and 14 units for women
d. Consuming 21 units for men and 14 units for women

Answer 18

d. Consuming 21 units for men and 14 units for women

Question 19

At what rate does the body remove alcohol from the system? __ unit per hour

Answer 19

1

Question 20

Hvað mörgum klst fyrir flug þarftu að hætta að drekka?

Answer 20

8 klst

Question 21

Hvaða sjúkdómur drepur flest fólk?

Answer 21

Malaría

Question 22

Varðandi exercise þá er mælt með REGULAR exercise, auka hjartslátt 100%, og þá í __ mín __ á viku.

Answer 22

20 mín, 3x á viku.

Question 23

What causes otic barotrauma and when is it likely to occur? Svar: Blockage in the eustachian tube which is most likely to occur in the climb/descent?

Answer 23

descent.

Er þá augað bara að leggjast saman vegna þrýstings utan frá?

Question 24

A prudent pilot should avoid flying for ………………… hours having consumed small amounts of alcohol.

Answer 24

24 hours

Question 25

Þú getur þolað short-term __G in the vertical axis.

Answer 25

25G’s, þú gætir þá væntanlega bara skotið þér beint upp og þolað þetta í sekúndubrot.

Question 26

To remove mercury spillage, ___ air must not be used

Answer 26

compressed air

Question 27

Hypoglycaemia can be caused by:

a. not eating regularly or fasting
b. too much sugar in the blood
c. excessive g-forces
d. stress

Answer 27

a. not eating regularly or fasting

Question 28

Food poisoning normally takes effect within ……..min of eating contaminated food.

Answer 28

90 min

Question 29

Alcohol is removed from the body at the rate of ………. milligrams per ………. millilitres per hour.

Answer 29

15 / 100

Question 30

Hvenær fer áfengisneysla að skemma líkamann (units weekly?)

Answer 30

21

Question 31

Hvenær fer caffeine að hafa áhrif á performance flugmanns? (í mg). Hvað ættir þú að takmarka daglega skammt við?

Answer 31

200 mg,

250 mg - 300 mg

Question 32

Galactic or cosmic radiation :

a. decreases with altitude
b. increases as latitude increases
c. increases as latitude decreases
d. increases as longitude increases

Answer 32

c. increases as latitude decreases

Galatic/cosmic radiation er meira við miðbaug. Líklega vegna þess að seguláhrif jarðar eru held ég að verjast gegn þessu og þau eru minni við miðbaug.