local and retrobulbar block anesthesia in combination with a brief span of amnesia - not general anesthesia -- produced by minute doses of four intravenous sedative drugs , has made it possible to perform ophthalmologic surgery without the memory of the pain of the retrobulbar block , followed by an ensuing quiescence augmented by behavioral modification for the duration of the operation .
C0002903
anesthesia
C0002915
general anesthesia