Anterior chamber
Volume of anterior chamber?
0.25 mL
What mnemonic is used for the layers of the anterior chamber angle?
What are the layers?
"I Can See The Line"
Iris, Ciliary body, Scleral Spur, Trabecular Meshwork, Schwalbe's Line
Where are the apex and base of the trabecular meshwork?
Base = Scleral spur/ciliary body
What two ways can the aqueous leave Schlemm's canal?
1. external collector channels
2. aqueous veins (of asher)
Occupied by zonules
Hazy limbal cornea overlying the angle and total internal reflection
What are the three configurations of the iris related to aqueous drainage?
Concave
Plateau
Flat
What areas of the trabecular meshwork at the filtering and non-filtering portions?
Filtering = posterior 2/3
Non-filtering = anterior 1/3
How do the external collector channels connect to the episcleral venous system?
Deep scleral plexus and intrascleral plexus
Canal of Petit
What are the three techniques for examining the anterior chamber angle?
Which is the gold standard?
2. Optical Coherence Tomography (OCT)
3. Gonioscopy (the gold standard)
What are the posterior and anterior scleral spur attachment sites?
Posterior = longitudinal ciliary body muscle
Anterior = trabecular meshwork sheets
What are the three portions of the trabecular meshwork and where do the first two attach?
1. Uveal meshwork - ciliary body stroma and longitudinal muscle fibers
2. Corneoscleral meshwork - scleral spur
3. Juxtacanalicular Con. Tis.
The termination of what forms Schwalbe's line?
Descemet's membrane
What's another name for the canal of petit?
Retrozonular space
What is the name of the lens used for gonioscopy?
Goniolens
What is the makeup of trabeculae? (inner core + covering)
Inner core = collagen and elastic fibers
Covering = endothelium
What types of cells is Schlemm's canal line with?
Pigment on Schwalbe's line?
Sampaolesi's line
What two coats meet to make the anterior chamber angle?
Uveal and corenoscleral
What is the function of lysosomes in the trabecular meshwork?
phagocytosis and removal of debris
What increases surface area for aqueous collection by extending into juxtacanalicular tissue?
Interanal collector channels (of Sondermann)
Anteriorly displaced Schwalbe's line?
Posterior embryotoxin