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Binocular Vision 1 incomplete - Coggle Diagram
Binocular Vision 1 incomplete
sensory fusion
corresponding retinal pts
same perceived visual direction
retinal element pair (e.g. 2 foveas)
except ON head (BS) + mono temp crescents
oculocentric
egocentric (direction + depth)
normal ret correspondence pattern
foveas
horizontal direction
vertical direction
location of ret correspondence
panum's fusional area
ret disparity < panum -> single fused
ret disparity > panum -> diplopia
haplopic zone -> BSV
dep size, speed, blur, orientation
larger in periphery
horopter
aniseikonia
unequal mag
diff size/shape of eye/optical comp
PR dist diff b/w eyes
effect on horopter
NOT COMPLETED
motor fusion
anisophoria
unequal stim to accom
unequal amp of accom
paresis/paralysis of EOM
direct muscle fibre damage
muscle disinsertion
muscle innervation damage
hering's law
horopter
pts locus of corresp pts
disparate retinal pts
retinal disparity
theoretical horopter: vieth-muller circle
3 assumptions
aka horizontal geometrical horopter
hering hillebrand horopter deviation
empirical flatter than VMC (but parabolic)
diff b/w empirical + theoretical horopter
shape changes w viewing dist
long dist convex
abathic dist flat
close dist concave + parabolic
helmholtz sheer in vert direction
in 3D
no single abathic dist
shape dep vert gaze angle + head tilt
measure empirical horopter
haplopic method
bifoveal fixation cent targ
ang cent of haplopic range
mapping haplopic range
measure horopter in 3D space
nonius method
vernier alignment -> find targ
only measure horopter in hori plane
not true ret correspondence
AFPP method
front-parallel
apparent
objective
method
fine stereopsis -> most reliable
why important
ref plane for relative ret disparity
stereoscopic depth
affects depth perception, rel dist, motion perception