What area lies between the cornea and iris?
Anterior chamber
What area lies between iris and vitreous chamber?
Posterior chamber
What forms the border between the anterior and posterior chambers?
iris
Where in the eye is there NO diffraction?
Pupil
What is the most posterior chamber in the eye?
Vitreous chamber
What does the vitreous chamber contain?
retina + vitreous gel
Optic disc is aka as the “blind spot”…why?
it does not contain rods/cones
What is at the center of the macula?
fovea
Where is the highest visual acuity located at?
fovea
What cells is the optic nerve derived from? And if diseased… it could lead to what demyelinating disorder?
Oligodendrocytes
MS
What cells make up the peripheral cranial nerves?
Schwann cells
What are the two layers of the retina?
Retinal pigmented epithelium
Neural retina
Which photoreceptors perceives BRIGHT light? and what colors?
Cons; blue, red green
Which photoreceptors perceives DIM light? and what colors?
Rods: grayish purple
Which nucleus serves as “master clock of brain”?
Suprachiasmic nucleus (hypothalamus)
Which nucleus deals with pupillary light reflexes?
Pre-tectal nucleus
Which nucleus deals with visual reflexes?
Supercolliculus of the midbrain
Which nucleus relays information on to the cerebral cortex?
Lateral geniculate nucleus
upper retinal fields correspond to __ visual field
UPPER RETINA –> INFERIOR Visual field
lower retinal fields correspond to __ visual field
LOWER RETINA –> SUPERIOR Visual field
Damage to the nasal retina would produce what type of vision?
Tunnel vision –> loss of all lateral visual fields
Nasal retina fibers correspond to what visual space?
Nasal retina –> LATERAL visual space
Temporal retina fibers correspond to what visual space?
Temporal retina –> MEDIAL visual space
where is the cuneus gyrus located?
Occipital lobe (extends towards parietal lobe)
where is the lingual gyrus located?
Occipital lobe (extends towards temporal lobe)
What information does the cuneus gyrus relay to the primary visual cortex?
INFERIOR visual fields/ SUPERIOR retinal fields
What information does the lingual gyrus relay to the primary visual cortex?
SUPERIOR visual fields/ INFERIOR retinal fields
Damage to the cuneus gyrus will cause:
CONTRALATERAL INFERIOR Quadrantanopsia
Damage to the lingual gyrus will cause:
CONTRALATERAL SUPERIOR Quadrantanopsia
V3,V4,V5 are located in what lobe and correspond to what visual information?
all are int he OCCIPITAL lobe
V3–> Form
V4 –> Color
V5 –> Motion
Damage to V5 will cause?
visual motion agnosia
if the right V5 was damages, where will you have issues?
RIGHT V5 damage –> loss of motion detection is LEFT visual fields
Damage in V4 will cause?
color agnosia
V3/V4 are supplied by what artery?
POSTERIOR cerebral artery
V5 is supplied by what artery?
MIDDLE cerebral artery