Design and validation of a handheld pupilometer for neurological evaluation

A handheld pupilometer has been designed for the purpose of neurological assessment. The handheld pupilometer has the potential to be used as a clinical tool at several levels in medical practice. The pupilometer precisely quantifies the size and response of the pupil to a visible stimulus, a measurement that typically has been ascertained through subjective evaluation in the clinic. While instrumentation has existed for several years, which allows for measurement of pupil response in a laboratory setting, the miniaturization of the technology into a ''smart" handheld instrument has facilitated the collection of normative data in a variety of locations and under different ambient light conditions. Furthermore, the instrument has been used to collect preliminary data from head injured patients in a clinical settingElectrical and Computer Engineerin