Boundaries/Attachments of the Vitreous Flashcards Preview

Fall 2019: OPT 114 Ocular Anatomy and Physiology > Boundaries/Attachments of the Vitreous > Flashcards

Flashcards in Boundaries/Attachments of the Vitreous Deck (20)
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1
Q

The vitreous humor makes up ___% of the globe
It fills the posterior / of the globe
and it is the largest single structure in the eye

A

80%

4/5

2
Q

Petallar fossa

A

Anterior depression of the vitreous that the lens sits in

3
Q

The lens sits in an anterior depression of the vitreous called

A

The patellar fossa

4
Q

Peripherally and posteriorly, the vitreous body is bounded by ___, ___ and __

A

Pars plana, retina, and optic disc

5
Q

Pars plana

A

Flat portion of the ciliary body that is bound to the vitreous body

6
Q

Ora serata

A

Connects pars plana of the ciliary body (flattest portion) to the neural retina (contains all layers except the RPE)

7
Q

Neural retina contains all layers except the

A

RPE

8
Q

What does annular mean

A

A 360 degree ring

9
Q

List all the attachments the vitreous has from strongest to weakest

A

Strongest

  1. Attachment at the Ora Serata, known as the vitreous base
  2. Attachment to the posterior lens
  3. Attachment to the optic disc
  4. Attachment to the macula
  5. Attachment to retinal vessels

Weakest

10
Q

When the vitreous attaches to the Ora serata, it is known as

A

The vitreous base

11
Q

ILM of the retina becomes the ___ of the non-pigmented epithelium of the ciliary body

A

The basement membrane

12
Q

The vitreous base has collagen fibers that are firmly embedded where

A

In the ILM (superficial retina) of the neural retina and of the non-pigmented epithelial basement membrane of the ciliary body (bc the two merge at ora serata)

13
Q

How does the vitreous attach to the posterior lens?

A

Collagen fibers from the vitreous form an annular attachment called the hyaloid capsular ligament of Wiger or retrolental ligament.

14
Q

Within the connection of the annular ring at the posterior lens, there is a potential space called

A

Berger’s space

15
Q

Bergers space

A

Potential space between the vitreous and the annular attachement to the posterior lens which is called the hyaloid capsular ligament of Wiger or the retrolental ligament.

16
Q

Hyaloid capsular ligament of Wiger/ Retrolental ligament

A

Annular attachement of collagen from the vitreous to the posterior lens

17
Q

How does the vitreous attach to the optic disc

A

Attaches by collagen fibrils to form an annular attachment to the ILM around the optic disc.

18
Q

Potential space between the vitreous and connection to the ILM at the optic disc

A

The area of martegiani

19
Q

The two potential spaces at places of attachment

A

Berger’s space by the lens. Attachment is called the hyaloid capsular ligament of Wieger or the Retrolental ligament
Area of Martegiani at the optic disc

20
Q

Two sites of annular attachments of the vitreous to

A

The lens- hyaloid capsular ligament of wieger/retrolental ligament

The optic disc

Annular attachments gives these locations a potential space- makes sense bc the hyaloid artery used to go to the optic disc to posterior lens