A survey study of the use of electropupillogram in predicting response to psychostimulants.

To confirm the conclusions from a previous study supporting the usefullness of electropupillogram (E.P.G.) in predicting clinical response, data from three separate studies with hyperkinetic and learning disabled (L.D.) children treated with stimulants were surveyed. Change in extent of pupillary contraction (E.C.) after a test dose of stimulant as measured by E.P.G. did not correlate significantly with actual clinical rating change (with one exception out of 14 correlations calculated). These negative results are reported with a reservation regarding their validity because of technical difficulties in data collection.