Ocular Drugs Flashcards
residence time
the amount of time a drug spends on the eye– goal is to increase residence time
issues with ocular topicals
corneal barrier (cant perm)
iris pigment
can be distributed by nasal mucosa –> systemic effects
issues with ocular ointments
hard to measure/dose
causes blurry vision for 15 min
diffic to apply
don’t refrigerate
ocular lubircants
aka artificial tears for dry eyes (oft caused by meds or contacts) purpose: protect, heal wounds, lubricate hypo or isotonic some = vasoconstrict
cyclosporine
class: immunomodulator/anti-inflamm
MOA: inhib T-cells
indications: dry eye, transplants, RA, psoriasis
CI: allergy. class C preg
ADR: ocular burning, hyperemia, discharge, epiphora, pn, FBO, pruritus, sting
sulfacetamide
class: AB
MOA: bacteriostatic. inhib prot synthesis
indication: broad spectrum. conjunctivitis
CI: allergy. silver rx interxn
ADE: corneal ulcer, irritation, stinging, burning
Fluoroquinolones (names)
Besifloxacin Ciprofloxacin Gatifloxacin Levofloxacin Moxifloxacin Ofloxacin
Fluoroquinolones
Class: AB
MOA: bactericidal. inhib DNA gyrase
indication: broad spectrum. conjunctivitis, corneal ulcer
CI: allergy
ADR: burning, FBO, photophobia, blurry, tear, dry
Macrolides (names)
Erythromycin
Azithromycin
Macrolides
Class: AB
MOA: bacteriostatic. inhib prot synthesis
indication: broad spectrum. acute bact infection, neonatal gonorrhea/chlamydia
CI: allergy
ADR: irritation, redness
Aminoglycosides (names)
Gentamicin
Tobramycin
Tobramycin/dexamethasone
Tobramycin/fluorometholone acetate
Aminoglycosides
Class: AB (+steroid)
MOA: bactericidal. binds ribosomal RNA
indications: broad spectrum. topical tx of bact infection (tobradex for inflamm conditions)
CI: allergy. tobradex = fungal or viral infect or mycobact infect
ADR: corneal ulcer, burning, conjunctivitis, hyperemia (rare: thrombocytopenic purpura, hallucinat)
Polymyxins (names)
Trimethoprin/polymyxin
Bacitracin/polymyxin
Polymyxins
Class: AB MOA: bactericidal. increase mem perm indication: broad spectrum. bact conjunctivitis, blepharitis, superficial infect CI: allergy ADR: irritation
Natamycin
Class: Antifungal (only ocular) MOA: fungicidal. binds mem and change perm indication: fungal infect CI: not fungal ADR: poor GI absorption