The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . thenormal organic functions such as glycosuria and albuminuria. Thesehave often been regarded as natural results of anesthesia and takenfor granted. They may now largely be obviated and in many casesentirely avoided by the use of anesthetics that are free from impuri-ties and by improved methods of administration. These statementsare based on clinical evidence. Next in importance to this objection is the possibility of the vom-itus reaching the field of operation and i
The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . thenormal organic functions such as glycosuria and albuminuria. Thesehave often been regarded as natural results of anesthesia and takenfor granted. They may now largely be obviated and in many casesentirely avoided by the use of anesthetics that are free from impuri-ties and by improved methods of administration. These statementsare based on clinical evidence. Next in importance to this objection is the possibility of the vom-itus reaching the field of operation and infecting it, which is alwaysa nasty complication at best. There is also the weighty objectionthat with any inhalation anesthetic the anesthetist and gauze arevery much in the way of the operator; and, not infrequently, the an 426 ANESTHESIA IN OPHTHALMIC SURGERY esthetist inadvertently allows the anesthetic to drop or flow into the patients eye. This has happened several times in our experience. To avert both difficulties, numerous extension masks have been devised of which Lefevers is quite as good as any we have
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