Summary VISUAL PATHWAY

Visual
Pathway
Introduction :
-




Visual optic pathway the
pathway or in nervous
pathway
•




that transmits impulses from Retina to visual Center in cerebral

Cortese .




• The
light rays from Temporal [ Outer] half og
visual
field fall
upon the nasal
part g corresponding Retina & Vice Versa .




°
Rods and cones are Visual Receptors and
fibers from visual
receptors synapse
with dendrites
of bipolar cells .




°

FIRST Order Neurons =

Bipolar cells in Retina .




Order Neurons cells
SECOND =

Ganglionic
Lateral
THIRD Order Neurons =

geniculate
body → Visual cortex .




Connections of Visual Receptors to Optic Nerve

exist btw
•
Two
pathways visual
receptors &
optic Nerve :



Private
ca,
pathway
(b) Diffuse pathway .




Private Pathway
#
Diffuse #
Pathway
Individual Cones in fovea centrale's connected
o
an o
Comes & Rods are

connected to separate bipolar cells -




via poly synaptic bipolar
Each
bipolar separate Ganglionic
to cell cells .
°
.




named And poly syn bipolar to
Midget ganglionic cell
.
.
.




Private
diffused Ganglionic cell .




°


pathway is
responsible for
This
pathway in
present
Acuity
.




( a , Visual
outside fovea .




discrimination

do ,
Intensity .




.
Good for overlapping .