[irreversible cholinesterase inhibitor with actions similar to those of echothiophate; it is a powerful miotic used mainly in the treatment of glaucoma; its vapor is highly toxic and it is recommended that only solutions in arachis oil be used therapeutically. ( CSP )] (UMLS (CSP) C0022181) =Organophosphorus Compound; Pharmacologic Substance; Hazardous or Poisonous Substance =cholinesterase inhibitor; Organophosphorus Compounds; alkylphosphate; [OP102] MIOTICS, TOPICAL OPHTHALMIC