AcyclovirEncephalitis, Varicella ZosterRetinal Necrosis Syndrome, AcuteEncephalitis, Herpes SimplexHerpes ZosterAntiviral AgentsValineHerpesvirus 3, HumanHerpes SimplexHerpes GenitalisHerpes LabialisHerpesvirus 2, HumanSimplexvirusFoscarnetGanciclovirOintmentsHerpes Zoster OphthalmicusProdrugsGuanineStomatitis, HerpeticKeratitis, DendriticThymidine KinaseHerpesvirus 1, HumanAdministration, OralAdministration, Topical