title: Treatment of acute retinal necrosis syndrome with oral antiviral medications.
abstract: OBJECTIVE
  Acute retinal necrosis (ARN) is a distinct ocular viral syndrome traditionally treated with intravenous acyclovir followed by oral acyclovir. We investigated the use of the oral antiviral medications valacyclovir and famciclovir as the sole treatment for patients with newly diagnosed ARN syndrome.
  
  
  METHODS
  Retrospective, uncontrolled, interventional case series.
  
  
  METHODS
  Eight consecutive patients with newly diagnosed ARN treated solely with oral antiviral medications.
  
  
  METHODS
  All patients received famciclovir or valacyclovir without antecedent intravenous therapy. One patient with bilateral ARN treated with famciclovir received a single intravitreal injection of foscarnet in the more severely involved eye.
  
  
  METHODS
  Clinically and photographically documented complete resolution of retinitis and best-corrected visual acuity on final follow-up.
  
  
  RESULTS
  Active retinitis resolved completely in 10/10 (100%) affected eyes. Initial response to treatment was seen as early as 4 days (in 5 eyes), with a median time to complete resolution of 14 days. At the last examination, visual acuity was improved (> or = 2 Snellen lines) in 6 (60%) eyes, stable in 2 (20%) eyes, and worse in 2 (20%) eyes. Over a mean follow-up of 36 weeks (range, 7-72 weeks), 3 eyes developed rhegmatogenous retinal detachment that was successfully repaired with 1 vitrectomy surgery. No patient with initially unilateral involvement developed disease in the contralateral eye.
  
  
  CONCLUSIONS
  In this pilot study, the use of the oral drugs valacyclovir and famciclovir resulted in complete regression of herpetic necrotizing retinitis. Additional studies are necessary to evaluate the role of these antiherpetic medications in the treatment of the ARN syndrome.
authors.affiliation: W. K. Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan School of Medicine, Ann Arbor, Michigan 48105, USA.
authors.forename: Alexander
authors.initials: A
authors.lastname: Aizman
authors.forename: Mark W
authors.initials: MW
authors.lastname: Johnson
authors.forename: Susan G
authors.initials: SG
authors.lastname: Elner
mesh_terms: D015075:2-Aminopurine / Q000031:analogs & derivatives* / Q000627:therapeutic use; D000212:Acyclovir / Q000031:analogs & derivatives* / Q000627:therapeutic use; D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000998:Antiviral Agents / Q000627:therapeutic use*; D015828:Eye Infections, Viral / Q000188:drug therapy* / Q000821:virology; D000077595:Famciclovir; D005260:Female; D005500:Follow-Up Studies; D006561:Herpes Simplex / Q000188:drug therapy* / Q000821:virology; D006563:Herpes Zoster Ophthalmicus / Q000188:drug therapy* / Q000821:virology; D006801:Humans; D008297:Male; D010865:Pilot Projects; D015882:Retinal Necrosis Syndrome, Acute / Q000188:drug therapy* / Q000821:virology; D012189:Retrospective Studies; D000077483:Valacyclovir; D014633:Valine / Q000031:analogs & derivatives* / Q000627:therapeutic use; D014792:Visual Acuity
chemical_list: D000998:Antiviral Agents; D015075:2-Aminopurine; D014633:Valine; D000077483:Valacyclovir; D000077595:Famciclovir; D000212:Acyclovir