6 Vitreous Body And Relationships

Question 1

1) Identify the borders of the Vitreous Body 2) Identify all of the basement membrane surfaces that interface with
the Vitreous Body. 3) Discuss the Vitreous attachments and identify the strongest to
weakest amongst them. 4) Discuss the vitreous zones and be able to compare/contrast them. 5) Describe the spaces within and around the vitreous body.

Answer 1

..

Question 2

Borders of vitreous:

_______: the Pars plana, ora serrata and peripheral retina.

_______: posterior retina and optic disk

______: posterior surface of crystalline lens & retro-zonular portion of posterior chamber

Answer 2

Peripherally

Posteriorly

Anteriorly

Question 3

The center of the anterior surface contains the ________, an indentation in which the lens sits

Answer 3

Patellar fossa

Question 4

What are all surfaces that interface with the vitreous?

Answer 4

Basement membranes

Question 5

What three things does the surface of the vitreous body touch?

Answer 5

Retina, ciliary body, crystalline lens

Question 6

The vitreous forms several attachments to surrounding structures.. what’s the STRONGEST and where is it located??

Answer 6

Vitreous base

ORA SERRATA

Question 7

Going from strongest to weakest, what’s the order of the vitreous attachments?

Answer 7

Posterior lens

Optic disc

Macula

Retinal vessels

Question 8

Going from weakest to strongest, what’s the order for the vitreous attachments?

Answer 8

Retinal vessels

The macula

Optic disc

Posterior lens

Question 9

What forms an annular attachment 1 to 2mm wide and 8-9mm in diameter between posterior surface of lens and anterior face of vitreous?

Answer 9

Weiger ligament (hyaloideocapsular ligament)

Question 10

Within the ring formed by the weiger ligament, there’s a space called _______

Answer 10

Berger’s space

Question 11

When the annular attachment around the optic disc detaches, it can be seen and is known as _____ ring

Answer 11

Weiss’

Question 12

What’s the term for when the vitreal adhesions at the macula pull due to aging changes and the vitreous WONT release, causing wrinkling?

Answer 12

Macular Pucker

Eventually lead to damage Called macular hole

Question 13

The vitreoretinal interface contains a “molecular glue”, what molecules are located in this extracellular matrix?

Answer 13

Laminin
Fibronectin

Have adhesive properties!

Question 14

What are the 3 vitreous zones from outermost to center?

Answer 14

Vitreous cortex (hyaloid surface)

Intermediate zone

Cloquet’s canal

Question 15

What’s the prepapillary hole can sometimes be seen clinically when the posterior vitreous detaches from the retina?

Answer 15

Weiss Ring

Question 16

The ________ ___ provide avenue for fine fibers enter the retina and encircle retinal vessels

Answer 16

Prevascular fissures

Question 17

When the vitreous undergoes aging changes ______ and ____ occurs.

_______ is liquefaction of the vitreous. While _____ is a drawing together of the particles of a gel

Answer 17

Synchysis. Syneresis

Synchysis

Syneresis

Question 18

When enough synchysis and syneresis occurs, the vitreous attempts to _______

Answer 18

Collapse on itself!

Question 19

What’s the space that lies within the angular ring formed by Wieger’s ligament?

Answer 19

Berger’s space

Question 20

What’s the space formed by termination of Cloquet’s Canal at the location of the vitreous-optic disc attachment?

Answer 20

Area of Mertegiani

Question 21

What vitreous zone contains the fine fibers that are continuous and unbranched that run anteroposteriorly?

Answer 21

Intermediate zone

Question 22

In the intermediate zone of the vitreous, what are the membrane like condensations that may be seen as areas having different fiber densities?

Answer 22

Vitreous Tracts

Question 23

In the intermediate zone of the Vitreous, the peripheral fibers fun parallel to the _______ whereas the central fibers run parallel to ________ _____

Answer 23

Cortex

Cloquet’s canal

Question 24

What’s the vitreous zone which contains the hyaloid artery system (which was formed from embryologic development)?

Answer 24

Cloquet’s Canal

Question 25

The cloquet’s canal terminates at the area of ______ which is a funnel shaped space at the optic nerve head. Becomes continuous with Canal from vitreous

Answer 25

Area of Martegiani

Question 26

Blood in Berger’s space is a good indicator of blood leakage in the __________

Answer 26

Vitreous body