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31 Cards in this Set

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  • Back
cocaine
block ne reuptake --> dilate nl eye, no effect on horner's (50% 1/2nd order, assoc pancoast) since no ne release in first place
paredrine
oh-amphetamine, indirect adrenergic agonist --> inc ne release --> dilates nl or 1/2nd order horner's, no effect 3rd order horner's
dilator mm
a-adrenergic, outside part of iris
pupillary sphincter mm
cholinergic, inside dilator mm
ciliary body mm
cholinergic contraction (accommodation), b-adrenergic relaxation (far vision)
horner's syndr
dec sns stim, miosis (inh dilator mm), ptosis (inh sup tarsal aka muller's m), raised brow (skeletal m compensation), color change (dec melanocyte stim, chronic/congenital)
ant chamber angle
cornea-iris
anisocoria
nl 20% pop, horner's, adie's (tonic) pupil, cniii palsy, pharm (belladonna alkaloids from jimson weed similar to atropine, scopolamine), iris dmg
adie's pupil
benign, 70% young f teens-30s, 50-90% dec dtr, usu unilateral, very slight reactivity to light

dmg post ganglionic psns nn from ciliary ganglion --> denervation hs (takes time to develop)

dx: .1% pilocarpine (too weak fo rnl pupil) --> contraction
pilocarpine
psns agonist, 1% constrict nl pupil, .1% too weak except for adie's, spasm of accommodation, red intraocular p (stretch trabecular meshwork spaces by pulling iris in), won't constrict pharm dilated pupil, inc visual acuity (dec curvature of cornea)

ae: too much --> won't dilate at night, brow ache
cycloplegic agents
cholinergic antagonist (mAchR), relaxes accommodation (ciliary body), relaxes pupillary constriction (sphincter)

atropine, tropicanimide, cyclopentolate, homatropine, scopolamine
atropine
from bella donna, most potent, up to 2 wks

use sever inflamm (uveitis w/ sarcoidosis, iritis, post-op)
tropicanimide
mydriacyl, shortest, onest 30 min, up to 4-6 hrs, standard, no diff .5/1% for fundus exam, determine refraction errors in children
cyclopentolate
cyclogyl, stronger, last 24 hrs, use corneal abrasion (ciliary spasm pain), other mild conditoins, 2ce/day
homatropine
longer than cyclopentolate, shorter than atropine, 1-3 days, 4x/day

use corneal abrasion, chemical burn, iritis, uveitis, post-op
scopolamine
2-4 days to wk

ae psychosis, restlessness, confusion, hallucination, vomiting, urinary incontinence

use motion sickness (transdermal, can cause unilateral pupil dilation)
phenylephrine
2.5% neosynephrine, 5-6 hr, onset 45 min, stim dilator mm (sympathetic), muller's (eye open wide), vasoconstrictor, small conc otc for redness (rebound effect)

10% sol death in few drops due to htn crisis, occipital ha, ventricular arrhythmia, tachycardia
mydriatic agent
dilate pupil (sns stim)

phenylephrine
routine dilation
combo 1% tropicanimide + 2.5% neosynephrine

.5% or 1% tropicanimide alone

REMEMBER TO DO FLASHLIGHT TEST TO CHECK FOR NARROW ANT CHAMBER ANGLES BEFORE DILATE PT'S EYES
dapripazole
rev-eyes, a-adrenergic reversal
nl fluid flow
ciliary body prod --> post chamber --> pupil --> ant chamber --> trabecular meshwork --> schlemm's canal --> episcleral v --> aq v --> blood
dx glaucoma
nl 15-16 mmhg

goldman applantor on anesthesized eye (old schiotz tonometer w/ weight), optometrist use non-contact air puff

check optic n cup/disc ratio, humphrey visual field perimeter
narrow angle glaucoma
<5% glaucoma pts, lens swells, cataracts --> push iris fwd, if dilate --> iris bunches up --> sudden absolute closure trabecular meshwork --> sudden onset inc p --> severe pain (eyes --> ha), redness of sclera, blurred vision, halos around lights, n/v, cloudy cornea, fixed/irregular/mid-dilated pupils

tx: break attack w/ drops to dec p, surgical periph iridectomy (now w/ lasers) --> equalize p ant/post chambers, lifetime cure, bilateral
epi
direct ns a/b-agonist, conjunctival constriction, slight mydriasis, red intraocular pressure (inc outflow), vasoconstriction

ae: if abs nasal vv --> htn crisis, tachycardia, ha, palpitation, chronic red eye, pvc, local burn/irritate, local allergic rxn, accumulate melanin granules
dipivefrin
propine, lipophilic ver of epi so better abs cornea --> convert to epi inside (much better ae) so .1% = 2% epi
brimonidine
alphagan, s a2-adrenergic, avoid b ae
timolol
b-block, drug of choice glaucoma, target ciliary body (dec prod)

ae: lethargy, lightheadedness, fatigue, mem loss, bradycardia, syncope, hypotension, arrythmia, wheezing, pulm edema, chf, red libido, depression, death

expensive
levobunolol
betagan, ns b-block
betaxolol
betopic, b1-block (cardioselective), not as effect but limit ae (esp pulm), use hx chf, asthma
combigan
alphagan + timolol, inc compliance
pg analogue
1st line drug, no systemic ae, iris/skin can get darker, eyelashes longer (latisse)