6 Vitreous Body And Relationships Flashcards
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.
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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
Peripherally
Posteriorly
Anteriorly
The center of the anterior surface contains the ________, an indentation in which the lens sits
Patellar fossa
What are all surfaces that interface with the vitreous?
Basement membranes
What three things does the surface of the vitreous body touch?
Retina, ciliary body, crystalline lens
The vitreous forms several attachments to surrounding structures.. what’s the STRONGEST and where is it located??
Vitreous base
ORA SERRATA
Going from strongest to weakest, what’s the order of the vitreous attachments?
Posterior lens
Optic disc
Macula
Retinal vessels
Going from weakest to strongest, what’s the order for the vitreous attachments?
Retinal vessels
The macula
Optic disc
Posterior lens
What forms an annular attachment 1 to 2mm wide and 8-9mm in diameter between posterior surface of lens and anterior face of vitreous?
Weiger ligament (hyaloideocapsular ligament)
Within the ring formed by the weiger ligament, there’s a space called _______
Berger’s space
When the annular attachment around the optic disc detaches, it can be seen and is known as _____ ring
Weiss’
What’s the term for when the vitreal adhesions at the macula pull due to aging changes and the vitreous WONT release, causing wrinkling?
Macular Pucker
Eventually lead to damage Called macular hole
The vitreoretinal interface contains a “molecular glue”, what molecules are located in this extracellular matrix?
Laminin
Fibronectin
Have adhesive properties!
What are the 3 vitreous zones from outermost to center?
Vitreous cortex (hyaloid surface)
Intermediate zone
Cloquet’s canal
What’s the prepapillary hole can sometimes be seen clinically when the posterior vitreous detaches from the retina?
Weiss Ring
The ________ ___ provide avenue for fine fibers enter the retina and encircle retinal vessels
Prevascular fissures
When the vitreous undergoes aging changes ______ and ____ occurs.
_______ is liquefaction of the vitreous. While _____ is a drawing together of the particles of a gel
Synchysis. Syneresis
Synchysis
Syneresis
When enough synchysis and syneresis occurs, the vitreous attempts to _______
Collapse on itself!
What’s the space that lies within the angular ring formed by Wieger’s ligament?
Berger’s space
What’s the space formed by termination of Cloquet’s Canal at the location of the vitreous-optic disc attachment?
Area of Mertegiani
What vitreous zone contains the fine fibers that are continuous and unbranched that run anteroposteriorly?
Intermediate zone
In the intermediate zone of the vitreous, what are the membrane like condensations that may be seen as areas having different fiber densities?
Vitreous Tracts
In the intermediate zone of the Vitreous, the peripheral fibers fun parallel to the _______ whereas the central fibers run parallel to ________ _____
Cortex
Cloquet’s canal
What’s the vitreous zone which contains the hyaloid artery system (which was formed from embryologic development)?
Cloquet’s Canal
