Iris

Front 1

The iris is about _____ in Diameter and ____ mm thick.

Back 1

12mm, .5mm

Front 2

The ____ pigmentation determines color of the eye.

Back 2

stromal

Front 3

The major arterial circle is made up of the _______ srteries.

Back 3

long posterior and anterior ciliary arteries

Front 4

_________ form the minor circle (arteries) at the collarette.

Back 4

tributaries of the major circle

Front 5

A _______ is a failure of atrophy of the anterior mesoderm. Very common.

Back 5

persistent pupillary membrane

Front 6

_______ is an extension of the pigmented epithelium of the iris over onto the anterior iris as a result of hyperplasia.

Back 6

Congential ectropion of the pigmented border (watermelon seeds)

Front 7

_______ are darkly pigmented hypertrophic growths of the pigmented epithelium at the pupillary border.

Back 7

Flocculi

Front 8

Flocculi may be _____/_____ in form--usually bilateral and mostly located at the ______ pupillary margin.

Back 8

nodular/cystic, superior

Front 9

Fuch's heterochromia is due to ____________. The Blue iris becomes _____ and the brown iris becomes ______.

Back 9

chronic insidious anterior uveitis. darker, lighter

Front 10

______ (aka_______ ) is a wreath of white or tan colored spots at the periphery of the iris. (found most often in down syndrome)

Back 10

Wolfflin or brushfield spots

Front 11

Is vision affected in simple coloboma?

Back 11

rarely

Front 12

Typical coloboma (not simple) involves the ____, ____, ____, and the _____. Does this decrease vision? What other 2 things are commonly seen with this?

Back 12

choriod, retina, ciliary body and the iris. Vision IS decreased, but the macula is spared. Strab and nystagmus

Front 13

What 3 problems go along with aniridia?

Back 13

photophobia, pendular nystagmus, poor va due to foveal hypoplasia

Front 14

What are 3 things of high prevalance involved with aniridia?

Back 14

1- juvenile glaucoma
2- cataracts
3- corneal opacities

Front 15

What is the mode of inheritence for ocular albinism?

Back 15

x-linked

Front 16

What 4 things go along with albinism?

Back 16

1- photophobia, poor acuity, pendular nystagmus, and high refractive error

Front 17

Albinism is an inborn error of metabolism of _____-.

Back 17

tyrosinase

Front 18

Anterior Uveal cysts are _________.

Back 18

round elevations of the iris

Front 19

You can see anterior uveal cysts best during _____.

Back 19

maximum dilation and gonio

Front 20

A pigmented cyst is of the ______, while a clear cyst is of the ______.

Back 20

pigmented iris, ciliary body

Front 21

T or F: anterior uveal cysts may disappear.

Back 21

true

Front 22

ICE syndrome stands for _____?

Back 22

Iridocorneal endothelial syndrome

Front 23

the main issus in ICE syndrome is ______. What can this lead to?

Back 23

corneal endothelial anomaly, corneal edema--> closing angle with glausoma and iris changes

Front 24

Is ICE unilateral or bilateral

Back 24

unilateral

Front 25

What are 3 common manifestations of ICE syndrome?

Back 25

1- iris atrophy, holes
2- reduced VA
3- pain

Front 26

What are 3 variants of ICE syndrome?

Back 26

1- progressive iris atrophy
2- Chandler's syndrome
3- Cogan-Reese

Front 27

If you dont see any iris changes, but corneal edema is present and normal IOPs--what form of ICE syndrome can this be?

Back 27

Chandlers

Front 28

During __________, blunt trauma tears the iris at the thinnest point. Can this cause monocular diplopia?

Back 28

Iridodialysis

Front 29

What are 6 signs of trauma?

Back 29

1- iridodialysis
2- ectopic lentis
3- angle recession
4- traumaic cataract
5- commotio retinae
6- Vossius ring

Front 30

After blunt trauma to the globe can the IOP be increased or decreased?

Back 30

yes

Front 31

Pigment dispersion syndrome is most common in people with ________ error.

Back 31

low myopic

Front 32

What are the 6 most common causes of rubeosis irides (NVI)?

Back 32

1- DR
2- CRVO
3- uveitis
4- POAG
5- trauma
6- retinoblastoma

Front 33

How do you treat someone with NVI?

Back 33

photocoagulation

Front 34

Malignant melanoma of the iris is greatest _____ the horizontal meridian.

Back 34

below

Front 35

What are 4 signs of malignant melanoma of the iris?

Back 35

1- rapid growth
2- vessels
3- acquired iris freckles
4- ectropian of the pigmented border
5- incomplete dilation

Front 36

If you see a "moth eaten" iris in an old person--is this normal.

Back 36

yes, a thinning ofthe stroma at the pupillary border