eyeguru Flashcards
The anterior surface of the vitreous body is called the anterior cortical gel and attaches to the posterior lens capsule as the
ligament of Wieger
The potential space between the peripheral posterior lens and the anterior cortical gel is bordered by the Wieger ligament and is referred to as
the Berger space
At the vitreous base, there are firm attachments to
the retina and the pars plana
The vitreous attaches to the retinal surface on the internal limiting membrane using the adhesion molecules
fibronectin and laminin
The space known as the […] is the area of vitreous anterior to the macula.
premacular bursa or precortical vitreous pocket
As the vitreous inserts on the edges of the optic nerve head it creates a funnel shaped void known as the opening of
cloquet’s canal
The central […] of the macula is called the fovea.
1.5 mm
The fovea has a floor known as the foveola which is […] in diameter.
0.35 mm
At the very center of the foveola is a small depression known as the […] which is […] in diameter.
At the very center of the foveola is a small depression known as the umbo which is 150-200 um in diameter.
Surrounding the fovea is the […] which is a ring […] in width.
Surrounding the fovea is the parafovea which is a ring 0.5 mm in width.
What is unique about the parafovea histologically?
The ganglion cell layer, inner nuclear layer and outer plexiform layer (henle fiber layer) are the thickest
Surrounding the parafovea is the […] which is a ring approximately […] wide.
Surrounding the parafovea is the perifovea which is a ring approximately 1.5 mm wide.
ora bay
posterior extension of the pars plana towards the retina
A […] is a radially orientated prominent thickening of retinal tissue that forms at the border of the retina and pars plana
meridional fold
meridional fold
radially orientated prominent thickening of retinal tissue that forms at the border of the retina and pars plana
Small little filaments of retinal tissue called […] extend anteriorly from the meridional folds into the pars plana and occurs more often […].
Small little filaments of retinal tissue called dentate processes extend anteriorly from the meridional folds into the pars plana and occurs more often nasally.
dentate processes
Small little filaments of retinal tissue called dentate processes extend anteriorly from the meridional folds into the pars plana and occurs more often nasally.
Cones have a 1 to 1 synapse with […]
a midget bipolar cell.
What are the first order neurons in the visual pathway?
Bipolar cells
What are the second order neurons in the visual pathway?
Ganglion cells
The external limiting membrane of the retina is formed by
the Muller cells interdigitating with the photoreceptors
The middle limiting membrane of the retina is formed by
the photoreceptor inner fibers and processes of the bipolar cells
where is superficial retinal capillary plexus
Ganglion Cell Layer
what contains Inner Plexiform Layer
synapses between ganglion cells, bipolar cells, and amacrine cells
what contains Ganglion Cell Layer
superficial retinal capillary plexus
what contains Inner Nuclear Layer
amacrine, bipolar and horizontal cells, deep retinal capillary plexus
where is deep retinal capillary plexus
Inner Nuclear Layer
what contains Outer Plexiform Layer
synapses between photoreceptors, bipolar, and horizontal cells
what contains Outer Nuclear Layer
photoreceptor cell bodies
what contains External Limiting Membrane
zonular attachment between photoreceptors and Müller cells
what contains Ellipsoid Zone
mitochondria
what contains Interdigitation Zone
junction between photoreceptors and RPE
outer blood-retinal barrier
RPE
marker of visual outcome in a number of retinal diseases such as idiopathic macular hole, epiretinal membrane, central serous chorioretinopathy, retinal vein occlusion, and diabetic macular edema among others
The integrity of the ellipsoid zone
layers of choroid
choriocapillaris, Sattler’s layer, Haller’s layer
Hyper-reflective on OCT
blood, fibrosis, drusen, cotton-wool spots, inflammatory cells
Retinal Nerve Fibre Layer is formed by
the axons of the retinal ganglion cells
