Moore Qs

Question 1

How many layers in the endothelium

Answer 1

350,000 to 500,000

Question 2

How many layers to the endothelium

Answer 2

1

Question 3

How often do endothelial layers regenerated

Answer 3

They don’t. Epithelium regenerates every 30 days, but endothelium does not

Question 4

How many people have high order abberations

Answer 4

10%

Question 5

How does the thickness of the ONH go

Answer 5

Follows the ISNT rule
I should be largest number
T should be smallest number

Question 6

What are the 3 main things that mean glaucoma

Answer 6

• high pressure
• cupping
• VF loss

Question 7

What is the average corneal thickness

Answer 7

535-565

Question 8

IOP in thin corneas

Answer 8

Underestimated

Question 9

IOP in thick corneas

Answer 9

Overestimated

Question 10

Where is the cornea thinnest

Answer 10

Apex

Question 11

Does the corneal thickness change with age

Answer 11

No

Question 12

When is the cornea thicker

Answer 12

Upon awakening

Question 13

What are the 2 types of A scan

Answer 13

• Emersion
• dry

Use Emersion for IOL calculations because it is more accurate)

Question 14

What are the two different types of glasses

Answer 14

Compensatory and corrective

Question 15

What is the difference between compensatory and corrective glasses

Answer 15

Compensatory are glasses that compensate for a problem that cannot be fixed, the only way to correct someone’s vision is with these glasses

Corrective is like a cast on a broken arm. Hopefully they will correct pt to 20/20 and then from that point you can decide if you need to use them all the time.

Question 16

What doe sepcular biomicroscopy look for

Answer 16

Endothelium of cornea

Question 17

What are the shapes of the endothelial cells of the cornea and why is that important

Answer 17

Hexagonal, when you have loss of these cells they will be less hexagonal. You can lose some with age, but they will not regenerate

Question 18

How many cells thick is the endothelium

Answer 18

1 cell thick

Question 19

How many cells are in the corneal endothelium

Answer 19

350,000-500,000

Question 20

What do you look for when you look at the corneal endothelium

Answer 20

Shape, number, density, variety

Question 21

What do you look at with OCT

Answer 21

Macula
ONH
Cornea 
Angles
Anything you can see with indirect ophthalmoscope or slit lamp, OCT can look at

Question 22

What does pachymetry do

Answer 22

Measures thickness

-CCT

Question 23

What is the average CCT

Answer 23

540-560

Question 24

Where can you measure with pachymetry?

Answer 24

Anywhere on the cornea

Question 25

What can you use for posterior segment imaging

Answer 25

``` Camera OCT Optic nerve analyzers A scan B scan ```

Question 26

What s the difference between monofilament and multifilament sutures

Answer 26

Monofilament is slick, needs multiple knots Multifilament Only need one knot, because it has better traction, wont slip in the tissue as well

Question 27

What is the difference between synthetic and natural sutures

Answer 27

Synthetic will not degrade in eye, want this in the eye Natural will degrade over time

Question 28

Difference between absorbable and nonabsorbalble sutures

Answer 28

Absorbable can be dissolved Nonabsorbalbe will not be dissolved

Question 29

Single suture technique

Answer 29

One knot

Question 30

Mattress suture technique

Answer 30

Horizontal parallel to incision | Vertical perpendicular to incision

Question 31

Why do you use nondominant hand to hold the needle driver?

Answer 31

So you can tie knots with the nondominant hand | -grab loose end of suture and pull it through

Question 32

Which is larger, 3 or 3.0?

Answer 32

3

Question 33

1.0, 2.0, 3.0 | Is this sequence getting larger or smaller?

Answer 33

Smaller | Think of .0 as a negative sign

Question 34

1,2,3 | Is this sequence getting larger or smaller?

Answer 34

Larger

Question 35

What is A scan used for

Answer 35

Axial length, ACD, lens thickness, VCD, not pachymetry

Question 36

Can you measure CCT with A scan

Answer 36

No

Question 37

What is B scan used for

Answer 37

The structure of the eye and adnexa - ONH - EOMs - Lens - retinal detachments - orbital space tumor

Question 38

Difference between compensatory and corrective lenses

Answer 38

Compensatory lenses do not fix anything, you need them all the time and you will always need them Corrective lenses will eventually fix the problem to where you do not need them eventually

Question 39

Which laser technique has a flap

Answer 39

LASIK

Question 40

What do you do instead of make a flap in PRK

Answer 40

Remove corneal epithelium

Question 41

What laser technique do you use for someone with thin corneas

Answer 41

PRK

Question 42

What laser techniques for glaucoma

Answer 42

YAG and SLT