BiguanidesPhenforminMetforminDisinfectantsContact Lens SolutionsChlorhexidineHypoglycemic AgentsProguanilSparteineAcanthamoebaAcanthamoeba KeratitisAmebicidesAcidosis, LacticPili, SexSulfonylurea CompoundsMephenytoinAnti-Infective Agents, LocalTitrimetryAdhesins, Escherichia coliAdenylate KinaseContact Lenses