Which of the following drugs is not used topically for treatment of open angle glaucoma:
Question Category:
Correct Answer:
Acetazolamide
Description:
C i.e. Acetazolamide - Acetazolamide is a diuretic (carbonic anhydrase inhibitor) used in glaucoma systemically. The topical counter pa is dorzolamideQ. All diuretics except mannitol and ethacrynic acid are contra indicated in patients with sulfa allergyQ. - Adrenergic drugs apraclonidine & brimonidine cause drowsinessQ Anti-Glaucoma Drugs Surgical Management Group Drugs Mechanism Ocular S/E Systemic S/E Contraindications Topical Laser Trabeculoplas Adrenergic * i3 blocker Reduce aqueous Allergic ble Bronchospasm, AsthmaQ, COPD, Antagonist (Non-selective) - Timolol Q secretion by cilliary body * pharoconj unctivitis Q. bradycardia, decreased CHF, Sinus bradycardia, AV ty - Levobunolol - Caeolol - Metipranolol - Adaprolol Non-selective 0 blockers are more effective in lowering the lOP Blurred vision / Burning, Corneal hyposthesiaQ, Dryness of eyes,Super- ficial punctate keratitis / Stinging & redness cardiac output, hypotension, depression, impotence, altered lipid profileQ block * Using Argon or Diode or Double frequency Nd:YAG LASER * Not used for solo or primary * l, blocker (selective) - Betaxolol Betaxolol is also thought to increse perfusion of the optic nerve head Stinging, local anaesthesia Less pulmonary side-effects Sinus bradycardia, AV block therapy as IOP reduction is seldom Adrenergic * Non-selective Reduce aqueous Follicular Increase in blood Angle closure >30% Agonist - EpinephrineQ - Dipivefrine Q secretion by cilliary body conjunctivitis, rebound pressure, Q arrhythmias glaucoma, Cardiovascular * Reserved for following Increase uveo- scleral outflow Possibly increases the trbecular out flow congestion, macular oedema in aphakes disease cases - Inadequate response to drug therapy Dipivefrine is a prodrug, conveed to epinephrine inside the eye, reducing local/systemic toxicity - Patient not compliant - As an adjuvant to drug - Avoidance of surgery * ai+a2-Selective -ApraclonidineQ Allergies, fluctuation in visual acuity Headache, drowsiness, Q fatigue Use of MAO inhibitors, Parkinonsonism Trabeculecto my , Hypetensive *Indications: * az-Selective Conjunctival crisis - Failed -BrimonidineQ -Clonidine blanching, ocular allergy DrowsinessQ, fatigue, blood pressure changes Same as above medical therapy & LASER Miotics Pilocarpine Q Improve trabecular Fluctuating and Increased Uveitis trabeculopla (Direct para sympatho- mimetics) PhysostigmineQ Ecothiophate Carbachol Demecarium outflow by contracting the cilliary muscles pulling the scleral spur blurred vision, miosis, browache, accommodative spasm sweating and salivation, urinary frequency, diarrhoea, bronchospasm sty - Pt not suitable for LASER therapy Prosta- glandin Latano/Bimato/ Travo-prost Increase uveo- scleral outflow Iris pigmentation, punctate keratitis Ocular inflammation/ - Eyes with very Analogue Isopropyl- unoprostone infection advanced disease Carbonic DorzolamideQ Block Carbonic Anhydrase Inhibitors AL 4333 A Anhydrase & reduce aqueous production Systemic * Ceain Anti - Carbonic A cetazolamideQ Block Carbonic Punctate keratitis, Bitter taste, Hypersensitivity Anhydrase Inhibitors Dichlorphen- amide Anhydrase & reduce aqueous ocular allergies headache, asthenia, renal to sulfa drugsQ, eye injury glaucoma drugs such as Methazolamide production calculi memantine Hyper- osmotic agents MannitolQ Increase serum osmolality,causing water to leave viterous cavity, reducing the TOP Iris pigmentation, Punctate keratitis Headache, symptoms of upper respiratory tract infection Hypeension, pulmonary edema, cardiac/renal failure are being evaluated for their efficacy in protecting retinal ganglion cells. Glycerol Diabetes
Get More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now