OCAP Flashcards
The anterior 1/6 of the eyeball is the _____________________
cornea
The oily layer of the tear flm is produced by the
meibomian gland
Vascular layer providing nutrients to the avascular layer of the eye
Middle vascular tunic/choroid
The thickened portion of the vascular layer is called
ciliary body
the sphincter pupillae muscle causes the pupil tomuscin
constrict
What layer of the tear film is the thinnest and the innermost?
mucin/mucoid layer
T/f
The bowman’s membrane is resistant to trauma thus can regenerate once destroyed
false
the bowman’s membrane does not regenerate
Anterior epithelium of the cornea regenerate every 14 days to prevent scar formation
false
7days lang beh
T/F
The radius of curvature of the central cornea is 7.8mm posteriorly
False
Anteriorly: 7.8mm
Posteriorly: 6.5mm
The layer which transmits electrical impulses
Inner nervous tunic - retina
T/F
the corneal stroma is composed of type IV collagen fibers
false
The corneal stroma is composed of lamellae of collagen fibrils arranged in a regular lattice (type I, III, V, VI)
The structure serving as attachment sites for EOM
sclera
Rods and cones are present in the neural layer
true
Junction in between the wing cells of the anterior epithelium
Zonula occludens/tight junctions
T/F
The jelly like fluid inside the posterior cavity of the eye is called the aqueous humor
False
Vitreous humor
The cornea and the sclera are connected by a ring called
limbus
forms the posterior 5/6 of the eye
sclera
Secretes aqueous humor
ciliary process
T/F
Bruch’s membrane is the innermost layer of the choroid
true
also known as lamina vitrea, lamina elastica, basal lamina, lamina basalis choroideae
T/F
A prolate shaped cornea has a steeper curvature at the periphery
False
A prolate shaped cornea has a steeper curvature at the center, flatter at the periphery
The middle layer of the eye is also known as
nutritive layer
A vascular diaphragm
iris
Hold the lens in place
suspensory ligaments/zonules
Responsible for the deturgescence of the cornea
endothelium
state of partial dehydration of the cornea
deturgescence
T/F
Optic disc is also known as yellow spot
FALSE
Optic disc is also known as BLIND spot
Macula lutea is also known as yellow spot
Fovea centralis is located within the
macula lutea
receptors involved in scotopic vision
rods
T/F
the outer plexiform layer that contains axodendritic synapses between axons of bipolar neurons and dendrites of ganglion and amacrine cells
false
the inner plexiform layer contains axodendritic synapses between axons of bipolar neurons and dendrites of ganglion and amacrine cells
the outer plexiform layer contains axodendritic synapses between photoreceptor cells & dendrites of bipolar and horizontal cells
the outer plexiform layer contains axodendritic synapses between _____________________ & ________________________
photoreceptor cells; dendrites of bipolar and horizontal cells
the inner plexiform layer contains axodendritic synapses between axons of ______________ and dendrites of ___________________-
bipolar neurons; ganglion and amacrine cells
The ganglion layer contains cell bodies of large _____________ neurons of the ganglion cells
multipolar
T/F
the outer limiting membrane forms innermost boundary of the retina
FALSE
the INNER limiting membrane forms innermost boundary of the retina
The pigmented epithelium houses the _______________
photoreceptor cells
T/F
bipolar cell is considered as the 1st order neuron in the visual pathway
F
bipolar cell is considered as the 2ND order neuron in the visual pathway, photoreceptor cell is considered as the 1st
Ganglion cell layer is absent in the
fovea
Form synapses between rod and cones, horizontal cells and dendrites of bipolar cells
outer plexiform layer
this layer of the retina removes tdebris from photoreceptor cells by phagocytic action
retinal pigmented epithelium
RPE remove debris from photoreceptor cells by
phagocytic action
this cell form synapses between the axons of bipolar cells and dendrites of ganglion cells
amacrine cells
Amacrine cell carries information
horizontally
area in the retina where keenest vision is observed
fovea
blind spot is also known as
optic disc/optic nerve head
layer of the retina that contains nuclei of rods and cones
outer nuclear layerla
the receptor located at the center of the retina
cones
layer of the retina which contains the axons of ganglioms cells
nerve fiber layer
a specific structure in the eye which is an extension of the brain
retina
Arrange in order the layers of the retina freom inner to outer
ILM
NFL
GCL
IPL
INL
OPL
ONL
OLM
PCL
RPE
Photoreceptor located at the periphery of the retina
rods
In the test for blind, when you look at the cross target with your left eye, the dot/circle ______________-
disappear
90% of aqueous pathway is unconventional outflow
False
90% of aqueous pathway is conventional/trabecular outflow
What is the shape of crystalline lens?
biconvex
T/F
the vitreous humor replaces the lymph that is absent in the eye
false
the aqueous humor replaces the lymph that is absent in the eye
The aqueous humor is found in the posterior sement of the eye
