Clinical quantitative pupillometry: The latency of pupillary constriction as measured with the IRIS system (preliminary results)

Using the IRIS pupillometer described by Reulen et at. (1988), a group of 46 patients suffering from optic neuritis was investigated. The latency of the pupil constriction was determined and shown to be prolonged when the affected eye was stimulated with visible light, prolonged with respect to stimulation of the healthy fellow eye. In a small group of nine myotonic dystrophy patients also the latency of the peak constriction was measured. In...