Benzalkonium CompoundsPreservatives, PharmaceuticalFood PreservativesPharmaceutic AidsOphthalmic SolutionsAnti-Infective Agents, LocalParabensThimerosalDisinfectantsProstaglandins F, SyntheticCloprostenolConjunctivaChlorobutanolSorbic AcidDrug ContaminationBenzethoniumAstemizoleTimololPreservation, BiologicalCorneaCosmeticsZygosaccharomycesTearsChlorhexidinePeracetic AcidBenzoic AcidSpermatocidal AgentsEpithelium, CornealWoodAtropine DerivativesIrritantsCetylpyridiniumSodium BenzoateDry Eye SyndromesFood PreservationRose BengalProstaglandins, SyntheticBenzyl AlcoholAdministration, TopicalPovidone-IodineAgrochemicals