Det er blevet rapporteret, at benzalkoniumchlorid, der normalt bruges som et konserveringsmiddel i oftalmiske produkter, kan medføre punktformet keratopati og/ eller toksisk ulcerøs keratopati.
Benzalkonium chloride, which is commonly used as a preservative in ophthalmic products, has been reported to cause punctate keratopathy and/or toxic ulcerative keratopathy.