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II. Anterior Segment Disease > Glaucoma (M3) > Flashcards

Flashcards in Glaucoma (M3) Deck (87)
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1

What are the major players in the presence of glaucoma?

1. optic nerve head
2. retinal nerve fiber layer
3. IOP
4. visual field testing
5. anterior chamber angle
6. central corneal thickness

2

What is the distance between the cup and the disc margin called?

neuroretinal rim

3

What is the rule as far as thickness associated with the neuroretinal rim?

ISNT from thickest to thinnest

4

What is the normal disc size in microns? 1. What is considered large? 2

1. 1500
2. >2100

5

What is chorioretinal atrophy surrounding the optic nerve head called?

parapapillary changes

6

What are the two zones associated with parapapillary changes (and what do they surround)?

1. beta (surrounds optic nerve)
2. alpha (surrounds beta zone)

7

What are the different disc changes associated with glaucoma?

1. baring of BVs
2. bayoneting
3. laminar dots
4. disc hemorrhage
5. collaterals

8

What is the baring of blood vessels an early sign of?

superior or inferior rim thinning

9

What is a double angulation of a blood vessel called?

bayoneting

10

What is lamina cribosa exposure due to neuroretinal tissue loss called? 1. When is it seen? 2

1. laminar dots
2. glaucoma and high myopes

11

What are the different types of disc hemorrhages associated with glaucoma?

1. drance
2. splinter

12

What are connections between two veins at the disc called?

collaterals

13

Are changes seen in the disc or the retinal nerve fiber layer first?

RNFL

14

What are the instruments to detect RNFL defects?

1. GDx
2. HRT
3. OCT

15

For the GDx testing, what is a quality level that is reliable?

>=8

16

For GDx testing, what is the numerical scale for determining asymmetry?

0-1 ; where 1 is exactly symmetric

17

For GDx testing, what are the associated NFI numerical values for each level: 1. low; 2. suspect; 3. high

1. 0-30
2. 31-50
3. 51-100

18

For GDx testing, while looking at the nerve fiber thickness map what colors indicate thinning? 1. Thicker? 2

1. blue
2. yellow and red

19

For GDx testing, while looking at the deviation map what colors indicate thinning? 1. Thicker? 2

1. yellow and red
2. blue

20

For GDx testing, what does the TSNIT graph show?

patients retinal thickness compared to database average

21

When is GDx and OCT testing not good for glaucoma analysis?

significant parapapillary atrophy

22

For Stratus OCT testing, what does the RNFL quadrant show?

Sectioned off retina with green to red pies of circle filled in to represent areas of thinning

23

What is the test analysis that combines the colors of stratus OCT and the database of GDx?

Sirus OCT

24

What value is desired for HRT symmetry?

0

25

For HRT testing, what color represents sloping in the topography map of the ONH?

blue

26

Which test is best for patients with significant parapapillary atrophy?

HRT

27

What is the normal range of IOPs?

11-21

28

Is the IOP higher or lower in the morning? 1. What is this called? 2

1. higher (~5)
2. diurnal curve

29

Do steroids increase or decrease IOP?

increase

30

If a patient is able to see a dimer light, will the Db level be higher or lower?

higher