Vitreous Body And Relationships

Question 1

What are the anterior borders of the vitreous body

Answer 1

Crystalline lens

Zonules

Question 2

What is the peripheral border of the vitreous body

Answer 2

Pars plana
Ora serrata
Peripheral retina

Question 3

What are the posterior borders of the vitreous body

Answer 3

Retina

Optic disc

Question 4

What is the patellar fossa

Answer 4

The indentation that the lens sits in

Question 5

The vitreous makes up what volume of the eye

Answer 5

80%

Question 6

T/F all surfaces that interface with the vitreous are basement membranes

Answer 6

True

Question 7

Where is the strongest attachment of the vitreous

Answer 7

At the vitreous base at ora serrata

Question 8

What are the attachments of the vitreous from strongest to weakest

Answer 8

S. Posterior lens
Optic disc
Macula
W: retinal vessels

Question 9

The vitreous base extends 1.5mm anterior or ora serrata

Answer 9

Know this

Question 10

What are the vitreal fibers that form the base of the vitreous embedded in

Answer 10

Basement membrane of nonpigmented epithelium of the ciliary body
And
Internal limiting membrane of the peripheral retina

Question 11

What is Weiger’s ligament

Answer 11

Ligament between posterior surface of lens and anterior face of the vitreous

Question 12

Is Weiger’s ligament stronger in young children or adults

Answer 12

Young children

Question 13

What is the name of the space that is created by ring that Weiger’s ligament makes

Answer 13

Berger’s space

Question 14

What happens to the peripapillary adhesion with age

Answer 14

It diminishes

Question 15

What does the annular attachment around the optic disc become when it detaches

Answer 15

Weiss’ Ring

Question 16

What is the diameter of the annular ring of attachment at the retina

Answer 16

3-4 mm

Question 17

What basement membrane of the retina interacts with the vitreous

Answer 17

Inner limiting membrane

Question 18

What basement membrane of the ciliary body interacts with the vitreous

Answer 18

Non pigmented epithelium

Question 19

What basement membrane of the lens interacts with the vitreous

Answer 19

Posterior capsule

Question 20

What is a Macular Pucker

Answer 20

When the vitreal adhesions at macula pull due to aging and the vitreous will not release, and the tension Cassie’s wrinkling of ILM of retina

Question 21

If a macular pucker goes untreated what can occur

Answer 21

A macular hole

Question 22

What does the vitreous attachment to the retains blood vessels consist of

Answer 22

Fine strands that extend in to the inner limiting membrane and surround the larger retinal vessels

Question 23

What is contained in the area of the vitreal and retinal attachment site

What property does it have

Answer 23

Extracellular matrix
Laminin
Fibronectin

Adhesion properties

Question 24

What causes a pre-retinal hemorrhage

Answer 24

the strands from the retinal-vitreal attachment

Occurs when there is vitreal traction on the retina

Question 25

What can occur with diabetic retinopathy

Answer 25

Neovasculations

Question 26

What is wrong with vessels that pop up in neovascularizations

Answer 26

They are leaky and easily tear or get damaged

Question 27

What happens in neovascularizations continues and goes untreated

Answer 27

The vessels will grow into the vitreous and create a high risk for bleeding

Question 28

What are the vitreal zones (2 of each)

Answer 28

Vitreous cortex (outermost) Intermediate zone (middle) Cloquets canal (center zone)

Question 29

What is another name for the vitreous cortex

Answer 29

Hyaloid surface

Question 30

What is the vitreous cortex composed of

Answer 30

Tightly packed collage fibrils that ru parallel and perpendicular to the retinal surface

Question 31

Where does the vitreous cortex extend to

Answer 31

Posterior base and is in contact with retina

Question 32

The vitreal cortex has channels that appear as what

Answer 32

Holes

Question 33

What are the vitreal cortex channels

Answer 33

Prepapillary hole Premacular hole Prevascular fissure

Question 34

When can the prepapillary hole be seen

Answer 34

When the posterior vitreous detaches from the retina

Question 35

What is the premacular hole

Answer 35

A weak area | A region of decreased density

Question 36

What is the purpose of the prevascular fissure

Answer 36

Provide an avenue where fine fibers enter the retina and encircle retinal vessels

Question 37

What is contained n the intermediate zone

Answer 37

Fibers that are continuous and unbranched and run anterior-posteriorly

Question 38

How do he peripheral fibers of vitreous run

Answer 38

Parallel to cortex

Question 39

How do the central fibers of the intermediate zone of the vitreous run

Answer 39

Parallel to Cloquets canal

Question 40

What are vitreous tracts

Answer 40

Areas that have differing fiber densities

Question 41

What is cloquets canal also known as

Answer 41

Hyaloid channel

Question 42

Where is Cloquet's canal located

Answer 42

In center of vitreous body

Question 43

What shape does Cloquet's Canal have

Answer 43

S shape

Question 44

What used to be held in Cloquet's Canal

Answer 44

The hyaloid artery system from embryological development

Question 45

Where does Cloquet's canal terminate at

Answer 45

Area of Martegiani

Question 46

What is the canal of Petit | Retrozonular space

Answer 46

Space between anterior hyaloid membrane and post equatorial zonules

Question 47

What is the canal of Hannover

Answer 47

Space between pre and post equatorial zonules in the posterior chamber Lies in front of canal of petit and anterior surface of hyaloid membrane

Question 48

What is Berger's Space

Answer 48

The space that lies with the annular ring formed by Wieger's ligament

Question 49

What is the area of Martegiani

Answer 49

Space formed by termination of Cloquets Canal where vitreous and optic disc attach

Question 50

When is blood seen in Berger's Space what does it indicate could be happening

Answer 50

Blood that has leaked into the vitreous body from undetected location When retinal tear/detachment are suspect

Question 51

What is Syneresis

Answer 51

Drawing together of the particles in the gel, shrinkage of the gel

Question 52

What happens when there are a lot of Synchysis

Answer 52

The vitreous collapses on itself and the vitreal adhesions will soon give way

Question 53

what is synchesis

Answer 53

Liquefaction