Glaucoma Flashcards
normal IOP
13-21 mmHg
high IOP
> 21 mmHg
NT glaucoma is characterized by
+ glaucomatous changes
normal IOP
glaucoma is characterized by
+ glaucomatous changes
elevated IOP
ocular HTN is characterized by
- glaucomatous changes
elevated IOP
risk factors for glaucoma
-high iop
-age
-FH
-race/ethnicity
-inc. cup to disc ration
-thin central cornea thickness
-ocular perfusion pressure
-T2DM
-myopia
who needs to be treated for glaucoma
all with elevated IOP AND confirmed disc changes/field defects
what is the treatment goal for IOP
lower IOP 25% or more below pretreatment levels
1st line options for glaucoma (2)
prostaglandin analogs > beta blockers
2nd line for glaucoma
brimonidine (combo w/ timolol) > dorzolamide (combo w/ timolol) > solo CAIs > netarsudil/omidenepeg
examples of prostaglandin analogs
bimatoprost
latanoprost
lanatnoprostene bunod
tafluprost
travoprost
unoprostone
side effects of PG analogs
conjunctival hyperemia, hypertrichosis, iris pigmentation changes
systemic- infection, headache
contraindications to PG analogs
existing ocular inflammation (keratitis, iritis, uveitis, macular edema)
which PG analogs (2) have highest efficacy?
which has least AEs?
high eff- bimatoprost, latanoprostene bunod
least AE- omidenepeg
examples of beta blockers
betaxolol
carteolol
levobunolol
metipranolol
timolol
side effects of beta blockers
local irritation, tachyphylaxis
systemic- cardiac, pulmonary, CNS
contraindications to beta blockers
sinus bradycardia, heart block, heart failure, pulmonary
example of alpha agonist
brimonidine
side effects of brimonidine
conjunctival hyperemia, irritation, allergic reactions, tachyphylaxis
systemic- drowsiness, xerostomia
what is available in combo with brimonidine?
timolol
examples of carbonic anhydrase inhibitors
brinzolamide & dorzolamide (topical)
acetazolamide & methazolamide (PO)
what is available in combination with dorzolamide?
timolol
when to treat ocular HTN
those with OH AND risk factors such as ethnicity, FH, thin central cornea, large cup to disc, and IOP >25 mmHg
when to treat normal tension glaucoma
those with NTG AND documented progression of visual field loss
wild iop fluctuations, rapid vision damage, unilateral, signaled by prodrome
infrequent AACC (angle closure)
risk factors for angle closure
shallow anterior chamber depth (eastern Asian), FH, hyperopia, age
drugs to lower IOP for AACC
initial treatment
IV or PO CAI (acetazolamide)
topical beta blocker
topical alpha agonist (apraclonidine)
agent used in initial treatment for AACC to fix the angle
topical pilocarpine
side effects of pilocarpine
spasms, headache, brow ache, lid twitch
secondary agents given PRN for AACC for additional IOP lowering if initial agents have no effect on IOP after 1 hour
hyperosmotics (PO glycerin or isosorbide, IV mannitol)
chronic PACG treatment
same as PAOG