Recording pupillograph of simple design; preliminary report.

SINCE interest is being increasingly extended to pupillography, a means has been devised to overcome the great loss of time involved in the conventional method. Instead of demanding a laborious measuring of each separate picture, this method allows a comprehensive view of the pupil reaction. The eye is focused on a film which moves slowly ina vertical direction. Very near to the film is fixed a horizontal slit of 0.1 mm., just in the place where the middle of the pupil is projected. As the film moves at 3 mm./sec., a resolving power of sw sec. is reached. Difficulties of eye movement are overcome by the patient's looking with the other eye at a small lightspot. With a preliminary apparatus a number of normal and abnormal pupillograms have been made, some of which are reproduced in Figs 1 (a) and (b). Dark blue or red light was used as "dark", a