Glaucoma Medications - Final, not Exam 2 Flashcards
increased IOP without damage to optic nerve
Ocular hypertension
progressive optic neropathy with distinctive atrophy of the optic nerve head with cytotoxic retinal ganglion cell death, in association or not to elevated intraocular pressure
Glaucoma
Risk factors: high IOP, family hx, ethnicity, advanced age, myopia, DM, CVD
risk factors for Glaucoma
2 mechanisms for treating ocular hypertension
decrease aqueous production, increase outflow
IOP at what point requires multiple pharmacological agents?
30 mmHg
3 categories that act on the ciliary epithelium
Beta blockers, alpha 2 agonists, CAI
2 categories that affect uveoscleral outflow
prostaglandins and alpha 2 agonists
1 category affecting trabecular meshwork
direct acting cholinergics
Only category with dual action ( ciliary epithelium and uveoscleral outflow)
alpha 2 agonists
Adrenergic antagonists or sympatholytic, B2 adrenergic antagonist that block excitatory response of alpha 2 receptors responsible of aqueous humor formation
Beta blockers- timolol, lovobunolol, metipranolol, carteolol, betaxolol
B2 blocker - better iop control than pilo and eminephrine, well tolerated in CLS pts, works for 3 weeks, wash out period for 1-2 months
Timolol
Beta blocker for glaucoma with more side effects in some patients
Levobunolol
BEta blocker with no significant effect in pulmonary function for glaucoma
Betaxolol
beta blocker for glaucoma that increases HDL, less effective than levo and hydrosoluble
Carteolol
category of non bacteriostatic sulfonamides that inhbit an enzyme to reduce rate of aq humour production, found mainly in RBC, inhibits formation of bicarbonate,
CAI’s
CAI reduces iop by 3 to 5 mmHg - not good for IOP above 30, better for mid 20 range, TID mono, BID combo, SE bitter taste, CI in cls, caution in sulfa allergies, safe in children older than 3
Dorzolamide
CAI 1% suspension, reduce iop 4 to 5, known to cause headaches, careful with migraines
Brinzolamide
CAI for OAG, secondary glaucoma and pre op tx for CAG, safe in children, comes in tablets, capsules and IV, CI sulfa allergies, short term- 250 acute- 500 mg, SE paresthesia, transient MYOPIA from lens retaining water
Acetazolamide
CAI with less frequent administration than Acetazolamide, 2 or 3 times per day
Methazolamide
Cholinergic direct acting- increase outflow- not widely used due to SE’s, 1 drop QID, contracts longitudinal muscle, not in patients younger than 40 years old due to fighting between accommodation and drug action causing pain
Pilocarpine
cholinergic direct acting- increase outflow- 1.5 and 3%, 1 drop 3 or 4 times per day, pre and post op IOP decrease, not for long term use
Carbechol
cholinergic antagonist to decrease aq outflow, cholinesterase inhbitor, irreversible, needs to be reconstituted, has many side effects like twitching, uveitis, myopia, retinal detachment, antidote is Atropine
Echothiopate
First line treatment in glaucoma, increase outflow, safe, one dose per day, safe with other meds, prostanoid receptors relax ciliary muscles and dilate ciliary vessels to enhance outflow, CI in immunocompromised or inflammatory conditions
Prostaglandins
Second line treatment in glaucoma
Betablockers