[Research on the biomechanical vibration behaviour of man's bulbi (author's transl)]

Mechanical vibration may lead to a decrease in visual performance. This may be expected if the natural frequency of the eye is excited. Experiments wit eight subjects and one repeat were carried out with the aim of calculating the biomechanical transmission of vibration between the cranium and the eye. The oscillation of the reflex-point of the cornea and of a light-point on the forehead were observed by a TV-camera and recorded using a multipoint-X-Y-tracker-system with a direct writer. The analysis showed typical resonance curves for the eye with maxima at 25-31.5 Hz typical to those found in animal experiments using other methods. Therefore at places of work transmission of such vibration frequencies to the head should be avoided to prevent a decrease in visual performance.