Eye Pathology

Question 1

Persistant irdopupillary membrane is caused by?

Answer 1

remnants of a fetal membrane that persist as strands of tissue crossing the pupil.
source of blood supply for the lens in fetus
normally atrophies from the time of birth to the age of four to eight weeks. If fails  PIPM

Question 2

in PIPM failure for atrophy of membrane in cornea results in?

Answer 2

Corneal opacities

Question 3

in PIPM failure for atrophy of membrane lens results in?

Answer 3

cataracts

Question 4

both pinguecula and ptyregium can manifest to

Answer 4

SCC or melanoma

Question 5

Conjuctival melanomas appear

Answer 5

Pigmented or non pigmented raised lesion that appears in ADULT life

Has a strafed epithelium, malignant melanocytic cells, exist in the basal layer of the conjunctiva.

Question 6

Conjuctival melanomas appear

Answer 6

on one side,
light skinned people,
middle age

Question 7

Choroid melanoma’s are the

Answer 7

Most common primary intra-ocular malignancy in White adults in North America and Europe

Question 8

Retinablastoma is in which chromosome?

Answer 8

Ch 13 band 14

Question 9

Retinoblastoma gross appearance?

Answer 9

white exophytic growth from the retina in to the vitrious fluid

Question 10

Retina blastoma micro appearance?

Answer 10

neoplastic cells have a large basophilic nucleus with little cytoplasm

Question 11

Flexner Winter-steiner rosettes

are

Answer 11

Clusters of cuboidal or columnar cells arranged around a central lumen.
Nuclei aredisplaced away from lumen.

Question 12

Homer Wright rosettes

are

Answer 12

Radial arrangements of cells around a central tangle of fibrils.

Question 13

Flexner Winter-steiner rosettes and Homer Wright rosettes

are seen in?

Answer 13

Retinoblastoma