Glaucoma HY

Question 1

Humphrey 24-2 and 30-2 use this degree grid

Answer 1

6-degree grid (3 degrees above and 3 degrees below horizontal midline)

Question 2

Test for advanced VF loss

Answer 2

Humphrey 10-2 (central 8 to 10 degrees) more test points with central island of vision

Question 3

CCT of ocular hypertensives

Answer 3

Higher than average CTT

Question 4

CCT of average population

Answer 4

530-545

Question 5

Takes advantage of birefringent properties of RNFL

Answer 5

Scanning laser polarimeter (GDx). measures relative RNFL thickness

Question 6

Measures light reflectivity to determine absolute RNFL thickness

Answer 6

OCT

Question 7

Plexiform neurofibroma occurs in

Answer 7

25% of patients with NF-1

Question 8

Optic nerve glioma

Answer 8

NF1

Question 9

After hyphema, risk of IOP elevation is greatest

Answer 9

Rebleeds occur 3 to 7 days after initial hyphema

Question 10

Frequency doubling technology (FDT) visual field preferentially activates

Answer 10

M (magnocellular) cells

(Frequenting McDonald’s Seems Krazy) F-M

Question 11

SWAP (Short-wavelength automated perimetry) preferentially activates

Answer 11

Koniocellular neurons (Frequenting McDonald’s Seems Krazy) S-M

Question 12

Valved tube

Answer 12

Ahmed

Question 13

Glaucoma syndrome with hypodontia and microdontia

Answer 13

(absence of teeth and small teeth) Axenfeld-Rieger syndrome

Question 14

Avoid in inflammatory glaucomas

Answer 14

Miotic agents ie pilocarpine - may exacerbate inflammation by breaking down blood-aqueous barrier and worsen PAS formation

Question 15

Mechanism of latanoprost

Answer 15

Increases uveoscleral outflow, a pressure independent mechanism, where aqueous passes from ciliary muscle to supraciliary and suprachoroidal spaces

Question 16

Main contributor to aqueous humor formation by ciliary processes

Answer 16

Active secretion using carbonic anhydrase II

Question 17

GLC1A

Answer 17

JOAG

Question 18

TIGR/MYOC

Answer 18

JOAG

Question 19

OPTN

Answer 19

Normal tension glaucoma

Question 20

Peripupillary atrophy with TID at pupillary margin

Answer 20

PXF

Question 21

PAS that ends at Schwalbe’s line

Answer 21

NVG - occurs b/c fibrovascular membrane a/w NVG does not grow over healthy corneal endothelium. ICE (abnormal K endo)

Question 22

Total internal reflection of light occurs

Answer 22

air-tear interface

Question 23

Hypermature cataract with increased concentration of high molecular weight lens proteins are released through microscopic openings in lens capsule, no KP

Answer 23

Phacolytic glaucoma