[Hand-held pupillometer for evaluating pupillary light reflex in general practice and at the bedside].
Owing to the sophisticated equipment currently required for the investigation of pupillary behavior, pupillographic procedures are still the preserve of a few specialized laboratories. To allow pupillographic measurements under ophthalmological office conditions, we designed a portable pupillometer that can also be used for bedside examinations. Following a defined light stimulus, the prototype presented in this paper records a direct pupillary light reflex on the basis of infrared reflex photometry. The latency of the pupillary reflex and the pupillary constriction time are determined and shown on a digital display.
Universitäts-Augenklinik Heidelberg.
E
E
Alexandridis
K H
KH
Gräser
H
H
Helmle
D004867:Equipment Design; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D007259:Infrared Rays; D008838:Microcomputers; D009902:Optic Neuritis / Q000175:diagnosis / Q000503:physiopathology; D010783:Photometry / Q000295:instrumentation*; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values; D012025:Reflex, Pupillary / Q000502:physiology*; D014741:Video Recording / Q000295:instrumentation*
Handpupillometer zur Prüfung der Pupillenlichtreflexe in der Praxis und am Krankenbett.