Ординатура / Офтальмология / Английские материалы / Primary Care Ophthalmology_Palay, Krachmer_2005
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Therapeutic Medications |
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abnormalities and experience symptoms related to “dry eyes” (burning, itching, reflex tearing, and foreign body sensation). Patients with ocular surface abnormalities usually respond well to the “artificial tears” type of lubricant, although the symptomatic relief may be only temporary.
Restasis (cyclosporine 0.05% emulsion) is a newer agent for the topical treatment of severe dry eye associated with ocular inflammatory disorders.
Table 17–3 Artificial Tear Preparations
Generic Name |
Trade Name |
Preservative* |
|
|
|
Carboxymethyl cellulose |
Refresh Plus |
None |
|
Celluvisc |
None |
Hydroxyethyl cellulose |
Comfort Tears |
Benzalkonium chloride, |
|
|
EDTA |
Hydroxyethyl cellulose, polyvinyl |
TearGard |
Sorbic acid, EDTA |
alcohol |
|
|
Hydroxyethyl cellulose, povidone |
Adsorbotear |
Thimerosal, EDTA |
Hydroxypropyl cellulose |
Lacrisert |
None |
Hydroxypropyl methylcellulose |
Isopto Plain |
Benzalkonium chloride |
|
Isopto Tears |
Benzalkonium chloride |
|
Tearisol |
Benzalkonium chloride, |
|
|
EDTA |
|
Ultra Tears |
Benzalkonium chloride |
Hydroxypropyl methylcellulose, |
Bion Tears |
None |
dextran 70 |
Tear Naturale II |
Polyquad |
|
Tears Naturale Free |
None |
|
Tears Renewed |
Benzalkonium chloride, |
|
|
EDTA |
Polycarbophil, PEG-400, dextran 70 |
AquaSite |
EDTA |
|
AquaSite (multidose) |
EDTA, ascorbic acid |
Polyvinyl alcohol, PEG-400, |
HypoTears |
Benzalkonium chloride, |
dextrose |
|
EDTA |
|
HypoTears PF |
EDTA |
Polyvinyl alcohol, povidone |
Murine |
Benzalkonium chloride, |
|
|
EDTA |
|
Refresh |
None |
|
Tears Plus |
Chlorobutanol |
|
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|
*Preparations containing preservatives should be used no more than 6 to 8 times a day, to prevent toxicity to the ocular surface.
EDTA, ethylenediaminetetra-acetic acid.
Antibiotics
The most common ocular pathogens usually are staphylococci, streptococci, and Haemophilus species. Empirical treatment generally is successful in eradicating most surface infections; however, resistant organisms are becoming more common. Appropriate culture and susceptibility testing should be addressed before the initiation of therapy when clinically indicated.
376 CHAPTER 17 • Guide to Ophthalmic Medications
In general, topical antibiotics are given 4 to 6 times a day for simple infections and during the postoperative period. Severe infections, however, may require the use of multiple fortified antibiotics or an appropriate topical fluoroquinolone every hour around the clock.
Fortified Antibiotics. Used by ophthalmologists for serious anterior segment and corneal infections when higher concentrations of drug are needed to fight unusually virulent pathogens, fortified antibiotics are easily prepared by most pharmacies. The most common examples are fortified tobramycin or gentamicin, fortified vancomycin, and fortified cefazolin.
Table 17–4 Antibiotics
Generic Name |
Trade Name |
Bacterial Coverage |
|
|
|
Bacitracin zinc |
AK-Tracin |
Most gram-positive organisms, |
|
|
diphtheroids, Haemophilus, and |
|
|
Actinomyces |
Chloramphenicol |
AK-Chlor |
Many gram-positive and gram-negative |
|
Chloramphenicol |
organisms, especially Haemophilus, |
|
(generic) |
Moraxella species, Staphylococcus aureus, |
|
Chloromycetin |
beta-hemolytic streptococci, and |
|
Chloroptic |
diphtheroids |
|
Ocu-Chlor |
|
Ciprofloxacin |
Ciloxan |
Broad spectrum, particularly targeting |
hydrochloride |
|
staphylococci, streptococci, and |
|
|
Pseudomonas aeruginosa |
Erythromycin |
AK-Mycin |
Most gram-positive organisms, |
|
Erythromycin (generic) |
diphtheroids, Haemophilus, Actinomyces, |
|
Ilotycin |
and Neisseria species |
Gatifloxacin |
Zymar |
Fourth-generation fluoroquinolone with |
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broader spectrum of coverage, but not |
|
|
as good for Pseudomonas species |
Gentamicin sulfate |
Garamycin |
Broad spectrum, particularly targeting |
|
Genoptic |
staphylococci (when drug used in high |
|
Gentacidin |
concentrations), and P. aeruginosa |
|
Gentak |
|
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Gentamicin (generic) |
|
Levofloxacin |
Quixin |
Broad spectrum, particularly targeting |
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staphylococci, streptococci, and |
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|
Haemophilus influenzae |
Moxifloxacin |
Vigamox |
Fourth-generation fluoroquinolone with |
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broader spectrum of coverage, but not |
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|
as good for Pseudomonas species |
Ofloxacin |
Ocuflox |
Broad spectrum, particularly targeting |
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staphylococci, streptococci, Haemophilus, |
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and P. aeruginosa |
Polymyxin B/bacitracin |
AK-Poly-Bac |
Some gram-negative organisms and most |
|
Polysporin |
gram-positive organisms, diphtheroids, |
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Haemophilus, and Actinomyces |
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Therapeutic Medications |
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Table 17–4 Antibiotics—cont’d
Generic Name |
Trade Name |
Bacterial Coverage |
|
|
|
Polymyxin B/ |
AK-Spore Neosporin |
Gram-negative organisms and broad |
neomycin/bacitracin |
Neotal |
spectrum for gram-positive organisms, |
|
Polymyxin B (generic) |
particularly targeting staphylococci, |
|
|
pseudomonads, diphtheroids, |
|
|
Haemophilus, and Actinomyces |
Polymyxin B/ |
Terramycin |
Most staphylococci, streptococci, |
oxytetracycline |
|
gonococci, Chlamydia species, and few |
|
|
gram-negative organisms |
Polymyxin B/ |
Polytrim |
Most staphylococci, streptococci, and |
trimethoprim |
|
Haemophilus |
Sulfacetamide sodium |
AK-Sulf |
Wide range of gram-positive and gram- |
|
Bleph-10 |
negative organisms; some staphylococci, |
|
Cetamide |
pneumococci, Haemophilus, Moraxella |
|
Isopto Cetamide |
and Chlamydia species |
|
Ophthacet |
|
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Sodium Sulamyd |
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Sulf-10 |
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Sulfacetamide (generic) |
|
Sulfisoxazole diolamine |
Gantrisin |
Wide range of gram-positive and gram- |
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negative organisms; some staphylococci, |
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pneumococci, Haemophilus, Moraxella |
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and Chlamydia species |
Tobramycin sulfate |
Defy |
Broad spectrum, including staphylococci, |
|
Tobrex |
streptococci, Haemophilus, and |
|
Tobramycin (generic) |
P. aeruginosa |
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Table 17–5 Antibiotic Concentrations
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Concentration of |
Concentration of |
Generic Name |
Trade Name |
Solution |
Ointment |
|
|
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|
Bacitracin zinc |
AK-Tracin |
NA |
50 units/g |
Chloramphenicol |
AK-Chlor |
0.5% |
1.0% |
|
Chloromycetin |
0.5% |
1.0% |
|
Chloroptic |
0.5% |
1.0% |
|
Ocu-Chlor |
0.5% |
1.0% |
Ciprofloxacin |
Ciloxan |
0.3% |
0.3% |
hydrochloride |
|
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Erythromycin |
AK-Mycin |
NA |
0.5% |
|
Erythromycin (generic) |
NA |
0.5% |
|
Ilotycin |
NA |
0.5% |
Gatifloxacin |
Zymar |
0.3% |
NA |
Gentamicin sulfate |
Garamycin |
0.3% |
0.3% |
|
Genoptic |
0.3% |
0.3% |
|
Gentacidin |
0.3% |
0.3% |
|
Gentak |
0.3% |
0.3% |
|
Gentamicin (generic) |
0.3% |
0.3% |
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378 CHAPTER 17 • Guide to Ophthalmic Medications
Table 17–5 Antibiotic Concentrations—cont’d
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Concentration of |
Concentration of |
|
Generic Name |
Trade Name |
Solution |
Ointment |
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|
Levofloxacin |
Quixin |
0.5% |
NA |
|
Moxifloxacin |
Vigamox |
0.5% |
NA |
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Ofloxacin |
Ocuflox |
0.3% |
NA |
|
Polymyxin B/bacitracin |
AK-Poly-Bac |
NA |
10,000 units, |
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500 units/g |
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Polysporin |
NA |
10,000 units, |
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|
500 units/g |
|
Polymyxin B/neomycin |
Statrol |
16,250 units, |
10,000 units, |
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3.5 mg/mL |
3.5 mg/g |
|
Polymyxin B/neomycin/ |
Neotal |
NA |
5000 units, 5 mg, |
|
bacitracin |
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400 units/g |
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Neosporin |
NA |
NA |
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Polymyxin B (generic) |
NA |
NA |
|
Polymyxin B/neomycin/ |
AK-Spore |
10,000 units in 1.75 mg |
NA |
|
gramicidin |
Neosporin |
NA |
||
or 0.025 mg/mL |
||||
|
Polymyxin B (generic) } |
NA |
||
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|||
Polymyxin B/oxytetracycline |
Terramycin |
NA |
10,000 units, 5 mg/g |
|
Polymyxin B/trimethoprim |
Polytrim |
10,000 units, 1 mg/mL |
NA |
|
Sulfacetamide sodium |
AK-Sulf |
10.0% |
10.0% |
|
|
Bleph-10 |
10.0% |
10.0% |
|
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Cetamide |
NA |
10.0% |
|
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Isopto Cetamide |
15.0% |
NA |
|
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Ophthacet |
10.0% |
NA |
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Sodium Sulamyd |
10%, 30% |
10.0% |
|
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Sulf-10 |
10.0% |
NA |
|
|
Sulfacetamide (generic) |
10%, 15%, 30% |
10.0% |
|
Sulfisoxazole diolamine |
Gantrisin |
4.0% |
4.0% |
|
Tobramycin sulfate |
Defy |
0.3% |
0.3% |
|
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Tobrex |
0.3% |
NA |
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Tobramycin (generic) |
0.3% |
0.3% |
|
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NA, not applicable. |
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Antivirals
Advances in the pharmacology of chemotherapeutic agents used to fight viral diseases have progressed rather slowly compared with those in other areas of medicine, in part because of the more complex mechanisms of viral infection that must be addressed in developing such agents. Viruses are obligate intracellular pathogens that use the host’s metabolic processes for their survival and replication. Thus, antiviral agents need to target the pathogen while leaving uninfected host cells essentially unaffected from their toxic side effects. To date, the most effective antiviral agents target viral enzymes and proteins that are essential for viral assembly.
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Table 17–6 Antiviral Agents
Generic Name |
Trade Name |
Concentration |
Indication |
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Idoxuridine |
Herplex |
0.1% solution |
HSV infection |
|
Stoxil |
0.5% ointment |
HSV infection |
Trifluridine |
Viroptic |
1.0% solution |
HSV infection |
Vidarabine |
Vira-A |
3.0% ointment |
HSV infection |
monohydrate |
|
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|
Acyclovir sodium |
Zovirax |
Systemic preparation only |
HSV, HZV infection |
Foscarnet sodium |
Foscavir |
Systemic preparation only |
CMV infection in immunocompromised |
|
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patients |
Famciclovir |
Famvir |
Systemic preparation only |
HZV infection |
Ganciclovir sodium |
Cytovene |
Systemic preparation only |
CMV infection in immunocompromised |
|
Vitrasert |
Intraocular implant |
patients |
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||
Valacyclovir |
Valtrex |
Systemic preparation only |
HSV, HZV infection |
hydrochloride |
|
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CMV, cytomegalovirus; HSV, herpes simplex virus; HZV, herpes zoster virus.
Antifungal Agents
Deciding on the appropriate ophthalmic antifungal usually depends on several variables, including the site of primary infection, route of administration, organism involved, and drug sensitivities. Currently, Diflucan (fluconazole) and Sporanox (itraconazole) are oral/systemic agents that show good ocular penetration as an adjunct in these difficult to treat infections.
Table 17–7 Antifungal Agents
Generic Name |
Trade Name |
Topical Concentration |
Spectrum |
|
|
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|
Amphotericin B |
Amphotericin B |
0.1-0.5% solution |
Blastomycetes; Candida, Coccidioides, and |
|
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|
Histoplasma species |
Flucytosine |
Ancobon |
1.0% solution |
Candida species |
Natamycin* |
Natacyn |
5% suspension |
Candida species, aspergilli, and Cephalosporium, |
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|
Fusarium, and Penicillium species |
Miconazole nitrate |
Monistat |
1% solution |
Candida and Cryptococcus species, aspergilli |
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|
*Often the drug of choice for most mycotic corneal infections and the only ocular formulation commercially available. The others need to be prepared by the pharmacy.
380 CHAPTER 17 • Guide to Ophthalmic Medications
Anti-inflammatory Agents
Anti-inflammatory agents are used most frequently to suppress immunologic mechanisms of all types, both externally and within the eye. Suppression of severe external inflammation is necessary to prevent corneal scarring and permanent tear film abnormalities. Within the eye, these agents help prevent synechiae (scarring), some forms of glaucoma, and postoperative inflammation. Topical administration allows excellent penetration into the anterior chamber. Some agents penetrate easier (e.g., suspensions) than others depending on the chemical composition. Topical corticosteroids should be used with caution because they can cause cataracts and glaucoma used chronically and may acutely potentiate herpes simplex viral replication or microbial infection.
Table 17–8 Anti-inflammatory Agents
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Topical |
Generic Name |
Trade Name |
Formulation |
Concentration |
|
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|
Dexamethasone |
Maxidex |
Suspension* |
0.1% |
Dexamethasone sodium |
AK-Dex |
Ointment |
0.05% |
phosphate |
Decadron |
Ointment |
0.05% |
|
Maxidex |
Ointment |
0.05% |
|
Dexamethasone (generic) |
Ointment |
0.05% |
Dexamethasone sodium |
AK-Dex |
Solution |
0.1% |
phosphate |
Decadron |
Solution |
0.1% |
|
Dexamethasone (generic) |
Solution |
0.1% |
Fluorometholone |
Fluor-OP |
Suspension* |
0.1% |
|
FML |
Suspension* |
0.1% |
|
FML Forte |
Suspension* |
0.25% |
|
FML S.O.P. |
Ointment |
0.1% |
Fluorometholone acetate |
Flarex |
Suspension* |
0.1% |
Loteprednol etabonate |
Alrex |
Suspension* |
0.2% |
|
Lotemax |
Suspension* |
0.5% |
Medrysone |
HMS |
Suspension* |
1.0% |
Prednisolone acetate |
Econopred |
Suspension* |
0.125% |
|
Econopred Plus |
Suspension* |
1.0% |
|
Pred-Forte |
Suspension* |
1.0% |
|
Pred Mild |
Suspension* |
0.125% |
Prednisolone sodium |
AK-Pred |
Solution |
0.125%, 1.0% |
phosphate |
Inflamase |
Solution |
0.125% |
|
Inflamase Forte |
Solution |
1.0% |
|
Prednisolone (generic) |
Solution |
0.125%, 1.0% |
Rimexolone |
Vexol |
Suspension* |
1.0% |
*Suspensions need to be shaken before instillation.
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Anti-inflammatory and Antibiotic Combinations. Generally, anti-inflammatory medications are indicated for steroid-responsive inflammatory ocular conditions for which a corticosteroid is indicated and bacterial infection or risk of bacterial ocular infection exists. These medications may be contraindicated in any condition in which an epithelial defect exists, including patients with epithelial herpes simplex keratitis and those who have recently undergone uncomplicated removal of a corneal foreign body.
Table 17–9 Anti-inflammatory and Antibiotic Combinations
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Formulation and |
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Generic Name |
Trade Name |
Amount |
Typical Dosage |
||
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Gentamicin sulfate/ |
Pred-G |
|
Suspension (5 mL) |
1 drop 4 times a day |
|
prednisolone acetate |
|
|
Ointment (3.5 g) |
Up to 4 times a day |
|
Neomycin/polymyxin B/ |
Dexacidin |
} |
Suspension (5 mL) |
1 drop 4 times a day |
|
dexamethasone |
Maxitrol |
Ointment (3.5 g) |
Up to 4 times a day |
||
Neomycin/dexamethasone |
NeoDecadron |
Suspension (5 mL) |
1 drop 4 times a day |
||
|
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|
Ointment (3.5 g) |
Up to 4 times a day |
|
Oxytetracycline/dexamethasone |
Terra-Cortril |
Suspension (5 mL) |
1 drop 3 times a day |
||
Sulfacetamide sodium/ |
AK-Cide |
|
Suspension (5 mL) |
1 drop 4 times a day |
|
prednisolone acetate |
VasocidinBlephamide } |
||||
Ointment (3.5 g) |
Up to 4 times a day |
||||
Tobramycin/dexamethasone |
Tobradex |
|
Suspension (5 mL) |
1 drop 4 times a day |
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|
Ointment (3.5 g) |
Up to 4 times a day |
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Nonsteroidal Anti-inflammatory Agents. Nonsteroidal anti-inflammatory drugs (NSAIDs) also are used to suppress inflammatory mechanisms, both externally and within the eye. They differ from corticosteroids in their mechanisms of action and effectiveness; however, they do not cause cataracts or glaucoma or potentiate herpes simplex viral replication.
Table 17–10 Nonsteroidal Anti-inflammatory Agents
Generic Name |
Trade Name |
Formulation |
Topical Concentration |
|
|
|
|
Diclofenac |
Voltaren |
Solution |
0.1% |
Flurbiprofen |
Ocufen |
Solution |
0.03% |
Ketorolac |
Acular |
Solution |
0.5% |
Suprofen |
Profenal |
Solution |
1.0% |
|
|
|
|
382 CHAPTER 17 • Guide to Ophthalmic Medications
Table 17–11 Comparison of Selected Anti-inflammatory Agents
Generic Name |
Trade Name |
Comment |
|
|
|
NSAIDs |
Ocufen |
Interference with prostaglandin-induced operative |
|
Voltaren |
miosis, other inflammations (e.g., iritis, cystoid |
|
Acular |
macular edema), and allergy-related irritation; no |
|
|
causation of cataracts or glaucoma; no potentiation of |
|
|
herpes simplex infection |
Loteprednol |
Alrex |
Used for ocular surface allergy control |
|
Lotemax |
Higher strength, better for intraocular inflammation |
|
|
Fewer side effects than with prednisolone and |
|
|
dexamethasone |
Medrysone |
HMS |
Weak steroid, useful for surface allergy, very few side |
|
|
effects |
Fluorometholone |
FML |
More potent than medrysone, excellent for external |
|
|
inflammation, fewer side effects than with |
|
|
prednisolone and dexamethasone |
Prednisolone |
Pred-Forte |
Potent steroid, highly effective for anterior segment |
acetate |
|
inflammation, higher risk of side effects (IOP |
|
|
elevation, infection, HSV activation) |
Dexamethasone |
Decadron |
Highly potent and effective, very high risk of side |
sodium |
|
effects |
phosphate |
|
|
Rimexolone |
Vexol |
Potent steroid, with somewhat fewer ocular side effects |
|
|
(similar to those with FML) |
|
|
|
HSV, herpes simplex virus; IOP, intraocular pressure; NSAIDs, nonsteroidal anti-inflammatory drugs.
Antiglaucoma Medications
Antiglaucoma medications are used to reduce optic nerve damage and visual loss associated with elevated introcular pressure. The seven classes of these medications, which differ in their mechanisms of action, are as follows:
1.Beta-blocking agents (Table 17–12)
2.Adrenergic agonists (Table 17–13)
3.Cholinergic agonists (Table 17–14)
4.Sympathomimetics (Table 17–15)
5.Carbonic anhydrase inhibitors (Table 17–16)
6.Prostaglandins (Table 17–17)
7.Hyperosmotic agents (Table 17–18)
Beta Blockers. A class of drugs commonly used as first-line agents for treatment of open-angle glaucoma and ocular hypertension, beta blockers work mostly by reducing aqueous humor secretion by the ciliary body. Because of some systemic absorption, they may be contraindicated in some patients with heart and respiratory conditions. More selective beta blockers appear to have less severe side effects, but are not as efficacious. Ocular side effects include stinging and burning.
Therapeutic Medications |
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Table 17–12 Antiglaucoma Medications: Beta Blockers
Generic Name |
Trade Name |
Typical Dosage |
Comments |
|
|
|
|
Betaxolol hydrochloride |
Betoptic-S (0.25%) 1 drop |
Generic (0.5%) 1 drop |
Beta-2 selective; use cautiously |
|
2 times a day |
2 times a day |
in patients with respiratory |
|
|
|
conditions |
Carteolol hydrochloride |
Ocupress (1.0%) |
1 drop 2 times a day |
Nonselective beta blocker |
Levobunolol |
Betagan (0.25%, 0.5%) |
1 drop 2 times a day |
Nonselective beta blocker |
hydrochloride |
Generic (0.25%, 0.5%) |
1 drop 2 times a day |
|
Metipranolol |
Optipranolol (0.3%) |
1 drop 2 times a day |
Nonselective beta blocker |
Timolol maleate |
Timoptic (0.25%, 0.5%) |
1 drop 2 times a day |
Nonselective beta blocker |
Timolol maleate |
Timoptic XE (0.25%, 0.5%) |
Once a day |
Nonselective beta blocker; |
|
|
|
solution becomes a gel |
|
|
|
once in contact with the |
|
|
|
eye, increasing period of |
|
|
|
drug delivery |
Timolol hemihydrate |
Betimol (0.25%, 0.5%) |
1 drop 2 times a day |
Nonselective beta blocker |
|
|
|
|
Alpha Agonists. Alpha agonists reduce intraocular pressure by decreasing aqueous production and increasing uveoscleral outflow. This class may prove to be effective at reducing intraocular pressure without the cardiac side effects of beta blockers. Currently, two drugs are on the market. The most common side effect is an allergic reaction developing with long-term use.
Table 17–13 Antiglaucoma Medications: Alpha Agonists
Generic Name |
Trade Name |
Typical Dosage |
Comments |
|
|
|
|
Apraclonidine |
Iopidine (0.5%, 1%) |
1 drop 3 times a day |
Short-term adjuvant for patients on |
|
|
|
maximal medical therapy; approximately |
|
|
|
1 month to be effective |
Brimonide tartrate |
Alphagan-P (0.15%) |
1 drop 3 times a day |
Agent with seemingly better toleration |
|
|
|
than its predecessor; less tachyphylaxis |
|
|
|
noted |
|
Generic (0.2%) |
1 drop 3 times a day |
High allergy incidence |
|
|
|
|
Cholinergics. Parasympathomimetic agents are divided into direct-acting (cholinergic) and indirect-acting (anticholinesterase) agents. Used primarily for glaucoma and control of accommodative esotropia, they reduce intraocular pressure by causing contraction on the ciliary muscle. This contraction pulls on the trabecular meshwork and facilitates aqueous outflow. Acute poisoning with these agents (unusual with topical application) can produce the cholinergic crisis syndrome, which includes sweating, gastrointestinal disturbances, bradycardia, and paralysis of the respiratory muscles.
384 CHAPTER 17 • Guide to Ophthalmic Medications
Table 17–14 Antiglaucoma Medications: Cholinergic Agents
Generic Name |
Trade Name |
Typical Dosage |
Concentrations |
|
|
|
|
Cholinergic Agents |
|
|
|
Carbachol |
Isopto Carbachol |
1 drop 3 times a day |
1.5%, 3% |
Pilocarpine |
Akarpine |
1 drop 4 times a day |
1%, 2%, 4% |
hydrochloride |
Isopto Carpine |
1 drop 4 times a day |
0.5%, 1%-6%, 8%, 10% |
|
Ocusert-Pilo |
1 insert a week |
20-40 mg/hr/week |
|
Pilocar |
1 drop 4 times a day |
0.5%, 1%-4%, 6% |
|
Pilopine HS Gel |
1/2 inch at bedtime |
4% |
|
Piloptic |
1 drop 4 times a day |
0.5%, 1%-4%, 6% |
|
Pilostat |
1 drop 4 times a day |
1%, 2%, 4% |
|
Storzine |
1 drop 4 times a day |
1%, 2%, 4% |
|
Generic |
1 drop 4 times a day |
0.5%, 1%-4%, 6% |
Pilocarpine nitrate |
Pilagan |
1 drop 4 times a day |
1%, 2%, 4% |
Anticholinesterase Agents |
|
|
|
Physostigmine |
Eserine |
1 drop 4 times a day |
0.25% |
|
Generic (ointment) |
1/2 inch 3 times a day |
0.25% |
Demecarium |
Humorsol |
1 drop 2 times a day |
0.125%, 0.25% |
|
|
to 1 drop a week |
|
Echothiophate iodide |
Phospholine iodide |
1 drop 2 times a day |
0.125%, 0.25% |
|
|
|
|
Sympathomimetics. Sympathomimetics have been of limited usefulness in the general population due to the numerous side effects (surface allergy, tolerance) associated with their use. However, a certain subset of the population tolerates these medications. These agents reduce intraocular pressure by mostly increasing aqueous outflow.
Table 17–15 Antiglaucoma Medications: Sympathomimetics
Generic Name |
Trade Name |
Typical Dosage |
Concentration |
|
|
|
|
Epinephrine bitartrate |
Epitrate |
1 drop every day or 2 |
2% |
|
|
times a day |
|
Epinephrine borate |
Epinal |
1 drop 2 times a day |
0.5%, 1% |
|
Eppy/n |
1 drop 2 times a day |
0.5%, 1%, 2% |
Epinephrine hydrochloride |
Epifrin |
1 drop every day or 2 |
0.5%, 1%, 2% |
|
Glaucon |
times a day |
1%, 2% |
Dipivefrin hydrochloride |
Propine |
1 drop 2 times a day |
0.10% |
|
|
|
|
Carbonic Anhydrase Inhibitors. Carbonic anhydrase inhibitors (CAIs) reduce aqueous formation by direct inhibition of carbonic anhydrase within the ciliary body. Oral CAIs are highly effective but can also result in serious side effects such as paresthesias, anorexia, gastrointestinal disturbances, headaches, altered taste and smell, and sodium and potassium depletion. Kidney stone formation may be facilitated in certain patients. Topical CAIs appear to be much better tolerated, with a lower side-effect profile, but are not as effective.
