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| Eye Condition | Possible therapeutic alternatives |  
| Blepharitis (eyelid) | Common pathogens | (Topical ointment ) bacitracin or erythromycin applied 2 to 4 times per day. Clean eyelid daily. |  
| Conjunctivitis: | Common pathogens | 
| Erythromycin (Ilotycin): ½" of ointment q3-4h or bid-qid. [ointment 0.5%]  or |  
| Gentamycin (Garamycin): 1-2 drops every 2-4 hours or ½" ointment bid-tid. [0.3% oint/soln] or |  
| Neosporin ( neomycin, bacitracin, polymyxin):  1-2 drops q1-6h or ½" oint q3-4h.  or |  
| Polytrim ( 1 mg trimethoprim/ polymyxin B sulfate 10,000 units): mild to moderate infections, instill 1 drop q3h (maximum of 6 doses per day) x 7 to 10 days. |  
| Sulfacetamide (Bleph-10, Sulamyd): Instill 1-2 drops every 2-3 hours initially. Dosages may be tapered by increasing the time interval between doses as the condition responds (e.g. qid). Usual duration: 7-1 0 days. or ½" ointment q3-8h.
 |  
| Tobramycin (Tobrex): Solution: mild to moderate 1-2 drops q4h.
 Severe infections, instill 2 drops into the eye(s) hourly until improvement, following which treatment should be reduced prior to discontinuation.
 |  
| TobraDex (Tobra + dexamethasone): 1-2 drops every 2 to 6 hours or ½" ointment 2 to 4 times daily. |  
| Ciprofloxacin (Ciloxan). Corneal ulcers: 2 drops q15 minutes x six hours, then 2 drops every 30 minutes for the remainder of the first day.  Day #2: instill 2 drops in the affected eye hourly. Day 3rd -14th: , place 2 drops in the affected eye q4h.  Treatment may be continued after 14 days if corneal re-epithelialization has not occurred.
  Conjunctivitis: 1-2 drops every 2 hours while awake x 2 days, then 1-2 drops every 4 hours while awake x five days. Ointment: Apply a ½" ribbon into the conjunctival sac  tid x 2 days, then apply a ½" ribbon bid x 5 days. |  
| Ofloxacin (Ocuflox): bacterial conjunctivitis: 1-2 drops q2-4 hours x 2 days,  then  Instill 1-2 drops four times daily x 5 days.
  Corneal ulcers/keratitis: Instill 1-2 drops every 30 minutes, while awake. Awaken at approximately 4 and 6 hours after retiring and instill 1-2 drops x 2 days. Then Instill 1-2 drops hourly, while awake x 5 days. Then Instill 1-2 drops, four times daily x 3 days. |  |  
| Keratitis (Cornea) H.Simpex |  | Trifluridine (Viroptic):  1 drop q1h (9 times per day) for up to 21 days. |  
| Keratitis (varicella-zoster)
 |  | Famciclovir 500mg po tid or Valacyclovir 1 gram po tid or  Acyclovir 800mg po 5 times per day. |  
| Vision- threatening bacterial infection  >1.5 mm diameter ulcer, other. |  | 
| Fortified ophthalmic drops (Topical)
 Usual regimen: Fortified tobramycin or gentamicin (14-15 mg/ml) q1h alternating with  [ fortified Ancef (50 mg/ml)  or Vancomycin (25-50mg/ml) q1h. ] |  
| Fortified Ancef (Cefazolin) (50 mg/ml): |  
| Reconstitute 1 gram cefazolin powder with 5ml (200mg/ml) sterile water (without preservative) or reconstitute 500mg vial with 2.5 ml. Then you may use any of the following dilutions: Add 1 ml to 3 ml artificial tears. Final concentration: 50 mg/ml. Refrigerate. Reported stability: 4-7 days. Add 2 ml to 6 ml of artificial tears. Final concentration: 50 mg/ml. Refrigerate. Reported stability: 4-7 days. Add 4 ml to 12 ml artificial tears. Final concentration: 50 mg/ml. Refrigerate. Reported stability: 4-7 days. (Side note: when adding the cefazolin to the artificial tears, aseptically remove the dropper head in a laminar flow hood. Do not attempt to use a needle through the dropper head, which may alter the intended drop size). Alternative: Dilute 500mg vial of cefazolin powder with 10 ml sterile water. Label: Final concentration: 50 mg/ml. Refrigerate. Stability: 7 days. |  
| Fortified Gentamicin or Tobramycin: (Usual concentration: 14 mg/ml): |  
| Start with the commercially available solution: Gentamicin 0.3% 5ml (15 mg/5 ml) ophthalmic solution or Tobramycin 0.3% 5ml (15 mg/5 ml) ophthalmic solution (. Add 2 ml of gentamicin or tobramycin injection (80mg/2ml) to the respective ophthalmic solution. Label: Concentration: 14 mg/ml.
 REFRIGERATE,
 Expires: 7 days.
 (Side note: when adding the tobramycin or gentamicin to the respective container, aseptically remove the dropper head in a laminar flow hood. Do not attempt to use a needle through the dropper head, which may alter the intended drop size). |  
| Vancomycin ophthalmic drops |  
| (Usual concentration: 25-50 mg/ml). Some studies have found the 25 mg/mL concentration to have similar efficacy compared to the 50mg/ml concentration and with better patient tolerance. Preparation (50 mg/ml): Reconstitute 500mg Vancomycin powder with 10 ml sterile water (without preservative). Alternatively, use 10ml of artificial tears. Label: Concentration: 50 mg/ml,
 REFRIGERATE;
 Expires: 4 days.
 Dosing: (Adult Dose) 1 drop hourly for first 24 hours, then taper gradually according to clinical improvement |  |     
| Ocular Decongestants/ Anti-Allergy. |  
| Cromolyn sodium (Crolom): | vernal conjunctivitis, keratitis, and keratoconjunctivitis 1-2 drops in each eye, 4-6 times daily, at regular intervals. |  
| Ketotifen Fumarate Ophthalmic Solution 0.025% (Zaditen) | Allergic conjunctivitis: 1 drop bid, (q8-12 hours). (non-competitive histamine antagonist and mast cell stabilizer) |  
| Levocabastine (Livostin): | Allergic conjunctivitis 1 drop in affected eye BID-QID. [susp: 0.05%] (Antihistamine) |  
| Lodoxamide tromethamine (Alomide): | Vernal keratoconjunctivitis. Dosing: 1-2 drops four times daily. [soln: 0.1%] Cromolyn-like action. |  
| Naphazoline (Naphcon, Vasocon): | Ocular decongestant. Dosing: 1 drop every 3 to 4 hours as needed up to 4 times daily. |  
| Vasocon-A antazoline phosphate (0.5%), naphazoline hydrochloride (0.05%) | Antihistamine/decongestant: Dosing: 1-2 drops 2 to 4 times daily as needed. |  
| Olopatadine (Patanol): | Allergic conjunctivitis: 1-2 drops twice daily. [0.1% soln] (selective H1-receptor antagonist and mast-cell release inhibitor) |  
| Pemirolast (Alamast): | Allergic conjunctivitis: 1-2 drops qid. |     |