Chapter 29 part 3

Question 1

most common primary intraocular malignancy of children

Answer 1

-retinoblastoma

Question 2

Flexure-Wintersteiner rosettes

Answer 2

-in well differentiated RB tumors

Question 3

RB-spreads to

Answer 3

• brain and bone marrow

- prognosis affected by–extraocular extension, invasion along optic n, by choroidal invasion

Question 4

primary retinal lymphoma

Answer 4

• aggressive tumor
• involves the 2 retinal layers–neurosensory retina and RPE
• spreads to brain via optic nerve

Question 5

most common primary neoplasms of optic n

Answer 5

• glioma (typically pilocytic astrocytoma)

- meningioma

Question 6

Anterior ischemic optic neuropathy (AION)

Answer 6

• similar to stroke
• interruption in blood supply to optic n–due to inflammation of vessels, embolic or thrombotic events
• loss of vision episodes
• optic n head–swollen and pale (loss of perfusion)

Question 7

papilledema

Answer 7

• swelling of optic n head–swollen and hyperemic!

- due to compression of n or from elevations of CSF P

Question 8

glaucomatous optic n damage

Answer 8

-majority of patients with glaucoma have elevated intraocular pressure

Question 9

glaucomatous optic n damage morphology

Answer 9

• loss of ganglion cells, thinning of retinal n fiber layer

- severe–optic n is cupped and atrophic

Question 10

staphyloma

Answer 10

-prolonged elevation of intraocular pressure can lead to focal thinning of sclera and uveal tissue that may line the sclera

Question 11

optic neuritis

Answer 11

-loss of vision secondary to demyelination of the optic n

Question 12

phthisis bulbi

Answer 12

• trauma, intraocular inflammation, chronic retinal detachment
• gives rise to an eye that is small (atrophic) and internally disorganized

Question 13

ciliochoroidal effusion

Answer 13

• exudate or blood bw ciliary body and sclera

- choroid and sclera

Question 14

cyclitic membrane

Answer 14

-presence of a membrane extending across the eye from 1 ciliary body to the other