[The evaluation of stroboscopic criteria]

The evaluation of stroboscopic findings and their comparison require the utmost experience of the examiner. Methods leading towards a more objective evaluation have been published but are not yet available in many phoniatric departments as routine procedures and can also fail as in the case of the mucosal wave for example. A procedure for judging each stroboscopic criterion separately is presented in this paper, the criteria being symmetry (symmetry of movement, synchronism), amplitudes, mucosal wave, vibratory closure (sufficiency, duration) and special findings such as aperiodic vibrations or longitudinal waves. For most of these criteria an index can be given thus making possible quasi-statistical calculations as long as the examination is performed by the same person.