Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Optometry > Week 8 > Flashcards

Week 8 Flashcards

1
Q

what is the limbus

A

transition zone between cornea and sclera
grey semi-transparent area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are the two junctions of the limbus

A

cornea-conjunctival junction
cornea-scleral junction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is the canal of schlemm

A

annular vessel located in a fold of sclera called scleral spur

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the schwalbe line

A

the join between trabecular meshwork and corneal endothelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is the trabecular meshwork

A

reticulated tissue between canal of schlem and anterior chamber
provides resistance to outflow of aqueous to maintain pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is gonioscopy

A

use of mirrored contact lens, to examine the anterior chamber angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what are the 3 layers of trabeculae of collogen and stomata

A

uveal meshwork
scleral meshwork
endothelial meshwork

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is the uveal meshwork

A

fine and stringy trabeculae
large irregular stomata between trabeculae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

scleral meshwork

A

superimposed flat sheets of trabeculae
band perforated by oval pores
stomata do not lie one over the other byt alternate position in each layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

endothelial meshwork

A

endothelial cells making up the wall of the canal of schlemm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the canal of schlemm

A

annular vessel at the scleral spur
no blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what does the iris do

A

control the amount of light entering the eye
depth of focus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what are the 3 parts of the uvea

A

iris
ciliary body
choroid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

where is the iris the thickest

A

colloarette

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is anisocria

A

difference in pupil size between the eyes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

4 principal layers of the iris

A

surface
stroma
muscle layer
epithelium

17
Q

what structures are within the anterior surface of the eye

A

fibroblasts and melanocytes
crypts of fuchs
collarette
pupillary ruff

18
Q

what are the structures in the stroma of the iris

A

blood vessels in spiral shape

19
Q

what is the muscle layer of the iris

for constrictions

A

ring of smooth muscle
pupillary region
ANS

20
Q

what are the muscle layer of the iris

for the dilation

A

radial muscle
ciliary region
ANS

21
Q

what are the two layers of the epithelium

A

contractile processes of dilator pupillae
prosterior layer of pigmented cells

22
Q

what is the blood supply to the iris

A

vessels are within the iris stroma
Major arterial circle: supplied by long posterior, short posterior, and anterior ciliary arteries
Minor iridic circle in the pupillary region
Venous drainage: anterior ciliary veins and vortex veins

23
Q

what is the nerve supply to the iris

A

sensory innervation

Optometry (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions