Procedures

Question 1

AC lens placement

Answer 1

LPI at 12

Question 2

LPI at 6 - when

Answer 2

DSEK/DMEK, silicone oil

Question 3

ALT - parameters

Answer 3

0.1s duration. 50 micron spot. 300-1000 mW power

Question 4

Gonioscopy - what distinguishes

Answer 4

appositional vs synechial vs plateau angle closure

Question 5

Which lens can be used to measure the optic disc diameter with a slit beam by directly reading off the slit-lamp scale?

Answer 5

Volk Super 66

Question 6

Which structure is the most tolerated in terms of touching the endothelium?

Answer 6

Iris

Question 7

Goldmann aplanation after scleral buckle - higher, lower or the same

Answer 7

inaccurately low (reduced ocular rigidity)

Question 8

Goldmann aplanation ain scleral scar - higher, lower or the same

Answer 8

inaccurately high

Question 9

Goldmann aplanation in corneal edema - higher, lower or the same

Answer 9

inaccurately low

Question 10

Goldmann aplanation in soft contact lens - higher, lower or the same

Answer 10

inaccurately low

Question 11

What is the threshold pupil diameter below which generalized depression artifacts may occur?

Answer 11

2.5mm

Question 12

Which location is associated with the highest frequency of bleb-related infections after trabeculectomy?

Answer 12

inferior

Question 13

size 0 target - area

Answer 13

1/16mm2

Question 14

size I target - area

Answer 14

1/4mm2

Question 15

size II target - area

Answer 15

1mm2

Question 16

size III target - area

Answer 16

4mm2

Question 17

size IV target - area

Answer 17

16mm2

Question 18

size V target - area

Answer 18

64mm2

Question 19

Conditions with high likelihood of trabeculectomy failure

Answer 19

younger age, uveitic glaucoma, neovascular glaucoma, aphakic galucoma, chemical burns, scarred conjuctiva

Question 20

TSCPC - settings

Answer 20

17-19 applications. 270 degrees. power 1.5-2.0 W. duration 2 seconds

Question 21

Indirect gonio lenses

Answer 21

Goldmann, Posner, Zeiss

Question 22

Direct gonio lenses

Answer 22

Koeppe

Question 23

Laser trabeculoplasty - effectiveness at 1 year and 10 years

Answer 23

80%, 30%

Question 24

How to better visualize the nerve fiber later

Answer 24

red-free filter on the direct ophthalmoscope

Question 25

narrow in Van Herick

Answer 25

distance between anterior iris and posterior cornea is 1/4 or less of the corneal thickness

Question 26

Argon laser iridoplasty - parameters

Answer 26

0.1-0.5s. duration; 200-500 micron spot size; 200-500 mW power

Question 27

YAG LPI - parameters

Answer 27

start with 1.0 mJ

Question 28

Selective laser trabeculoplasty - parameters

Answer 28

3 ns duration; 400 micron spot size; 0.4-1.0 mJ power

Question 29

Humphrey 30-2 and 24-2 programs - points how many degrees apart

Answer 29

6 degrees

Question 30

What measures absolute RNFL thickness

Answer 30

HRT, OCT

Question 31

What measures relative RNFL thickness

Answer 31

scanning laser polarimetry (GDx)

Question 32

HRT =

Answer 32

confocal scanning laser ophthalmoscopy

Question 33

GDx =

Answer 33

scanning laser polarimetry

Question 34

Which method takes advantage of the nerve fiber layer's natural birefringence?

Answer 34

scanning laser polarimetry (GDx)

Question 35

antifibrotic agents are effective in...

Answer 35

filtering procedures (NOT effective in drainage implants)

Question 36

antifibrotic agents increase risk of...

Answer 36

blebitis/endophthalmitis, hypotony maculopathy

Question 37

Fornix-based trabeculectomy

Answer 37

at the limbus, technically easier, risk of wound leak. lower, more diffuse blebs, fluid posterior

Question 38

Limbal-based trabeculectomy

Answer 38

incision 8-10mm posterior to the limbus (fornix), technically more difficult. bleb more focal and elevated. less prone to leaks

Question 39

What is the most common complication after trabeculectomy?

Answer 39

cataract

Question 40

Valved shunts

Answer 40

Krupin, Ahmed

Question 41

Non-Valved shunts

Answer 41

BMW: Baerveldt, Molteno, Wthout valve

Question 42

Glaucoma after scleral buckle - features

Answer 42

may choroidal effusion and anterior rotation of the ciliary body. flattening of peripheral iris with relatively deep central AC. blood in Schlemm's canal (increased EVP), LPI not effective --> adjust or release tension of the scleral buckle

Question 43

Glaucoma after panretinal photocoagulation (PRP) - mechanism

Answer 43

ciliary body become thickened and rotated anteriorly

Question 44

unique complication of ECP compared to TSCPC

Answer 44

endophthalmitis, sympathetic ophtalmia

Question 45

SLT in PEX

Answer 45

effective, less power needed, shorter effect, more post laser IOP spikes