Basics

Question 1

Neuriectoderm makes:

Answer 1

RPE
Ciliary body
Iris
Neuro = pigment

Question 2

Surface ectoderm makes:

Answer 2

the epithelial lining of:
cornea, lens, conjunctiva
Surface = no pigment

dilator and sphincter muscles.

Question 3

The most important gene in the development of the lens is ____

Answer 3

PAX-6

Question 4

Nanophthalmia is _____

Answer 4

eye with a length of less than 19 mm.

Question 5

The average eye length is ___ mm.

Answer 5

23 mm

Question 6

Passing through the superior orbital fissure are ________

Answer 6

3,4,S.O., V1, Annnd, 6 :

3,4 = CN 3 and 4
SO = Sup. ophthalmic vein.
Annnd = anastomosis (recurrent lacrimal + middle meningeal arteries) and sympathetic nerves.
6 = CN 6

Question 7

tear film layers and thickness:

Answer 7

LAM:
Lipid - 0.1-0.2 um
Aqua - 7-8 um
Mucin - 1 um

Question 8

tear film layers: Lipid made from?

Answer 8

meibomian and zeiss

Question 9

tear film layers: Aqua made from?

Answer 9

lacrimal gland and Kraus and Wolfring

Question 10

tear film layers: mucin made from?

Answer 10

goblet

Question 11

The length and volume of the eye ball is___

Answer 11

24 mm, and 30 cc

Question 12

Average corneal thickness is :

Answer 12

550 um

Question 13

Macule and Fovea diameters:

Answer 13

Macule = 3.5 mm

Fovea = 1.5 mm