FORCE DEVELOPMENT AND VELOCITY OF HUMAN SACCADIC EYE-MOVEMENTS .1. ABDUCTION AND ADDUCTION

1. We have recorded horizontal saccadic eye movements with EOG and mea sured corresponding force development by means of a contact lens-strai n gauge technique in ten normal subjects. 2. We found that the peak ve locity of the saccade was higher in adduction than in abduction, while peak tension and steady-state tension were balanced in the two direct ions both in the right and left fields of gaze. 3. Amplitude, duration and peak velocity of the saccade were linearly correlated to the corr esponding tension parameters within the mnge of 20 deg eye movements. 4. The results show that information of eye muscle force production ca n be obtained by measurements of horizontal eye movements with EOG, wh ich is convenient and easy to perform, especially in children. 5. The results provide a basis for further studies of saccadic movements in p atients with strabismus of different types.