eyeguru Flashcards

1
Q

The anterior surface of the vitreous body is called the anterior cortical gel and attaches to the posterior lens capsule as the

A

ligament of Wieger

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2
Q

The potential space between the peripheral posterior lens and the anterior cortical gel is bordered by the Wieger ligament and is referred to as

A

the Berger space

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3
Q

At the vitreous base, there are firm attachments to

A

the retina and the pars plana

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4
Q

The vitreous attaches to the retinal surface on the internal limiting membrane using the adhesion molecules

A

fibronectin and laminin

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5
Q

The space known as the […] is the area of vitreous anterior to the macula.

A

premacular bursa or precortical vitreous pocket

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6
Q

As the vitreous inserts on the edges of the optic nerve head it creates a funnel shaped void known as the opening of

A

cloquet’s canal

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7
Q

The central […] of the macula is called the fovea.

A

1.5 mm

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8
Q

The fovea has a floor known as the foveola which is […] in diameter.

A

0.35 mm

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9
Q

At the very center of the foveola is a small depression known as the […] which is […] in diameter.

A

At the very center of the foveola is a small depression known as the umbo which is 150-200 um in diameter.

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10
Q

Surrounding the fovea is the […] which is a ring […] in width.

A

Surrounding the fovea is the parafovea which is a ring 0.5 mm in width.

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11
Q

What is unique about the parafovea histologically?

A

The ganglion cell layer, inner nuclear layer and outer plexiform layer (henle fiber layer) are the thickest

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12
Q

Surrounding the parafovea is the […] which is a ring approximately […] wide.

A

Surrounding the parafovea is the perifovea which is a ring approximately 1.5 mm wide.

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13
Q

ora bay

A

posterior extension of the pars plana towards the retina

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14
Q

A […] is a radially orientated prominent thickening of retinal tissue that forms at the border of the retina and pars plana

A

meridional fold

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15
Q

meridional fold

A

radially orientated prominent thickening of retinal tissue that forms at the border of the retina and pars plana

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16
Q

Small little filaments of retinal tissue called […] extend anteriorly from the meridional folds into the pars plana and occurs more often […].

A

Small little filaments of retinal tissue called dentate processes extend anteriorly from the meridional folds into the pars plana and occurs more often nasally.

17
Q

dentate processes

A

Small little filaments of retinal tissue called dentate processes extend anteriorly from the meridional folds into the pars plana and occurs more often nasally.

18
Q

Cones have a 1 to 1 synapse with […]

A

a midget bipolar cell.

19
Q

What are the first order neurons in the visual pathway?

A

Bipolar cells

20
Q

What are the second order neurons in the visual pathway?

A

Ganglion cells

21
Q

The external limiting membrane of the retina is formed by

A

the Muller cells interdigitating with the photoreceptors

22
Q

The middle limiting membrane of the retina is formed by

A

the photoreceptor inner fibers and processes of the bipolar cells

23
Q

where is superficial retinal capillary plexus

A

Ganglion Cell Layer

24
Q

what contains Inner Plexiform Layer

A

synapses between ganglion cells, bipolar cells, and amacrine cells

25
Q

what contains Ganglion Cell Layer

A

superficial retinal capillary plexus

26
Q

what contains Inner Nuclear Layer

A

amacrine, bipolar and horizontal cells, deep retinal capillary plexus

27
Q

where is deep retinal capillary plexus

A

Inner Nuclear Layer

28
Q

what contains Outer Plexiform Layer

A

synapses between photoreceptors, bipolar, and horizontal cells

29
Q

what contains Outer Nuclear Layer

A

photoreceptor cell bodies

30
Q

what contains External Limiting Membrane

A

zonular attachment between photoreceptors and Müller cells

31
Q

what contains Ellipsoid Zone

A

mitochondria

32
Q

what contains Interdigitation Zone

A

junction between photoreceptors and RPE

33
Q

outer blood-retinal barrier

A

RPE

34
Q

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

A

The integrity of the ellipsoid zone

35
Q

layers of choroid

A

choriocapillaris, Sattler’s layer, Haller’s layer

36
Q

Hyper-reflective on OCT

A

blood, fibrosis, drusen, cotton-wool spots, inflammatory cells

37
Q

Retinal Nerve Fibre Layer is formed by

A

the axons of the retinal ganglion cells