Chapter 6. Aqueous & Vitreo Chambers

Front 1

The ....... ........ is bounded
anteriorly by the corneal endothelium; peripherally by the trabecular meshwork, a portion of the ciliary body, and the iris root; and posteriorly by the anterior iris surface and the pupillary area of the anterior lens.

Back 1

anterior chamber

Front 2

The structures through which aqueous exists, collectively called the ......... ......., consist of the trabecular meshwork and Schlemm’s canal.

Back 2

filtration apparatus

Front 3

The .... ..... lies at the
posterior edge of the internal scleral sulcus.

Back 3

scleral spur

Front 4

The .... ..... encircles the circumference of the anterior chamber.
In cross section it has a triangular shape, with its apex at the termination of Descemet’s membrane (Schwalbe’s line, and its base a the scleral spur.

Back 4

trabecular meshwork

Front 5

The meshwork can be separated into two anatomic divisions: 1. The ..... ..... is the outer regional its
sheets attach to the scleral spur.

Back 5

corneoscleral meshwork

Front 6

The..... ..... is the inner sheets, which lie inside
to the spur, attach to the ciliary stroma and longitudinal muscle fibers. Some of the sheets may attach to the iris root.

Back 6

uveal meshwork

Front 7

The ... .... is a circular
vessel and is considered to be a venous channel, although it normally contains aqueous humor rather than blood. It is outer to the trabecular meshwork and anterior to the scleral spur.

Back 7

canal of Schlemm

Front 8

The region separating the endothelial cell lining of the canal from the trabecular meshwork is called the..... .....

Back 8

juxtacanalicular tissue

Front 9

The primary function of Schlemm’s canal and the trabecular meshwork is to.....

Back 9

provide an exits for the aqueous humor

Front 10

Aqueous can pass through the spaces within the
uveal meshwork; this pathway is called the ... .... and accounts for a relatively small amount (5-35%).

Back 10

unconventional outflow

Front 11

The remainder of the aqueous follows the ... ... pathway and moves through the meshwork and into the narrower pores of the corneoscleral meshwork and through the juxtacanalicular tissue and the endothelial lining into Schlemms canal.

Back 11

conventional outflow

Front 12

Production remains fairly constant; most cases of increased IP are caused by ....... aqueous outflow.

Back 12

decreased

Front 13

The location of the highest resistance to aqueous movement seems to be in the region of the .... .... and (according to some) the endothelium of the inner wall of Schelmm’s canal.

Back 13

juxtacanalicular tissue (JCT)

Front 14

Currently the most effective drugs use in glaucoma treatment are ...... ; they are well tolerated and compliance is good because instillation may only be necessary once a day. They enhance outflow thourgh the uveoscleral pathway, athough the exact mechanism has not been fully defined.

Back 14

prostaglandins

Front 15

Increased IOP can contribute to damage of the retinal fiber layer, either directly by ..... .... or indirectly through impeding blood perfusion.

Back 15

mechanical pressure

Front 16

The vitreous forms several attachments to surrounding structures. The strongest of these is the (I) .... .... located at the ora serrata.

Back 16

vitreous base

Front 17

..... ....., also called the
hyaloid channel or the retrolental tract, is located in the center of the vitreous body. It has an S shape, rotated 90o with the center dip downward, and is the former site of the hyaolid artery system, which was formed during embryologic

Back 17

Cloquet’s canal

Front 18

The ...... content of the vitreous is
highest in the vitreous base, next highest in the posterior cortex, next in the anterior cortex, and lowest in the enter.

Back 18

collagen

Front 19

CC
With aging, the vitreous base adhesion extends further posteriorly, and the border approaches the equator. These changes can increase traction on peripheral retina and might contribute to the development of retinal tears and detachment.

Back 19

Peripheral Retinal
Traction

Front 20

The vitreous body is a storage area for ..... for the retina and lens and provides an avenue for the movement of these substances within the eye. The vitreous, because of its viscoelastic properties, acts as a “shock absorber,” protecting the fragile retinal tissue during rapid eye movements and strenuous physical activity.

Back 20

metabolites

Front 21

One of the most common abnormalities that occur at the posterior retinal-vitreous interface is a .... .... ....caused by this traction.

Back 21

posterior
vitreal detachment

Front 22

The.... .... .... is formed at the periphery of the chamber, where the corneoscleral and uveal coats meet.

Back 22

anterior chamber angle