Glaucoma HY Flashcards
Humphrey 24-2 and 30-2 use this degree grid
6-degree grid (3 degrees above and 3 degrees below horizontal midline)
Test for advanced VF loss
Humphrey 10-2 (central 8 to 10 degrees) more test points with central island of vision
CCT of ocular hypertensives
Higher than average CTT
CCT of average population
530-545
Takes advantage of birefringent properties of RNFL
Scanning laser polarimeter (GDx). measures relative RNFL thickness
Measures light reflectivity to determine absolute RNFL thickness
OCT
Plexiform neurofibroma occurs in
25% of patients with NF-1
Optic nerve glioma
NF1
After hyphema, risk of IOP elevation is greatest
Rebleeds occur 3 to 7 days after initial hyphema
Frequency doubling technology (FDT) visual field preferentially activates
M (magnocellular) cells
(Frequenting McDonald’s Seems Krazy) F-M
SWAP (Short-wavelength automated perimetry) preferentially activates
Koniocellular neurons (Frequenting McDonald’s Seems Krazy) S-M
Valved tube
Ahmed
Glaucoma syndrome with hypodontia and microdontia
(absence of teeth and small teeth) Axenfeld-Rieger syndrome
Avoid in inflammatory glaucomas
Miotic agents ie pilocarpine - may exacerbate inflammation by breaking down blood-aqueous barrier and worsen PAS formation
Mechanism of latanoprost
Increases uveoscleral outflow, a pressure independent mechanism, where aqueous passes from ciliary muscle to supraciliary and suprachoroidal spaces
Main contributor to aqueous humor formation by ciliary processes
Active secretion using carbonic anhydrase II
GLC1A
JOAG
TIGR/MYOC
JOAG
OPTN
Normal tension glaucoma
Peripupillary atrophy with TID at pupillary margin
PXF
PAS that ends at Schwalbe’s line
NVG - occurs b/c fibrovascular membrane a/w NVG does not grow over healthy corneal endothelium. ICE (abnormal K endo)
Total internal reflection of light occurs
air-tear interface
Hypermature cataract with increased concentration of high molecular weight lens proteins are released through microscopic openings in lens capsule, no KP
Phacolytic glaucoma
