Page 467 - UK Air Operations Regulations (Consolidated) 201121

~ Regulation SPA - ANNEX V - Specific Approval Operations n trik

. astigmat ism
presbyopia
Effects of light on night vision & NV protection
physio logy:
. Light levels
illumination
luminance
reflectance
contrast
. Types of vision:
photopic
mesopic
scotopic
Da v versus night vision
. Dark. adaptation process:
dark adaptation
pre-adaptive state
. Purkinje shift
. Ocular dlromatic aberration
Photochromatic interval
2 Night vision human Night blind spot (as compared to day blind spot) 1 hour
factors . Field of v iew and peripheral vision
. Distance estimation and depth perception:
monocular cues
l
motion para I ax
Recommended
Item Subject Area Subject Detai.ls
T1 me
geometric perspectrve
slZe constancy
overlapping contours or interposition of
objects
. Aerial perspective:
variations in colour or shade
loss of deta ii or texture
position of light source
direction of shadows
Binocular cues
Night vlSion techniques:
off-ceJ1tre vision
scanning
shapes and silhouettes
Vestibular illusions
. Somatogyra 1 ii lusions:
leans
graveyard spin
coriolis illusion
Somatogravic ii lusions:
oculograph ic illusions
elevator illusion
oculoagravic illusions
Proprioceptive illLJSions
Dealing with spatia l disorientat ion
Visual illusions:
aut o kinetic illusion
confLJSion with ground lights
relative motion
reversible per5pective illusion
false vertica l and horizontal cues
altered planes of refer ence
height /depth perception illusion
f1 icker vertigo
fascination (fixation)
structu ral illusions
size-di!.tance illusion
. Hel icopter design limitations:
w indscreen condition
helicopter instrument design
helicopter structural obstructfOn
int erior lights

Recommended
Item Subject Area SUbject Details
Ti me
exterior I ights
Self-imposed stresses:
drugs
exhaustion
alcohol
tobacco
hypoglycaemia
injuries
physical fitness
. Stress & fatigue:
acute vs. chronic
prevention
Hypoxia issues and night vision
Weather/environmental conditions:
snow (white-out)
dust ( brown-out)
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