title: Should the pupil be used as a fixed reference for instrument alignment?
authors.forename: Ronald A
authors.initials: RA
authors.lastname: Schachar
mesh_terms: D000867:Anterior Chamber / Q000033:anatomy & histology; D002924:Ciliary Body / Q000187:drug effects* / Q000503:physiopathology; D003315:Cornea / Q000503:physiopathology*; D019781:Corneal Topography; D004338:Drug Combinations; D006801:Humans; D007498:Iris / Q000503:physiopathology; D008916:Miotics / Q000008:administration & dosage*; D009184:Mydriatics / Q000008:administration & dosage*; D010656:Phenylephrine / Q000008:administration & dosage; D010862:Pilocarpine / Q000008:administration & dosage; D011680:Pupil / Q000187:drug effects*; D012016:Reference Values; D012029:Refraction, Ocular; D014331:Tropicamide / Q000008:administration & dosage
chemical_list: D004338:Drug Combinations; D008916:Miotics; D009184:Mydriatics; D010862:Pilocarpine; D010656:Phenylephrine; D014331:Tropicamide