[Evaluation of the efficiency of the visual system in automobile drivers]

On the basis of results of the examinations performed in 545 persons one was aiming to establish the most frequently encountered abnormalities which are the cause of disqualifications in obtaining a professional or unprofessional driving licence. The licence obtained 386 persons and from that number 59.1 per cent professional and 40.9 unprofessional drivers. One hundred and fifty nine persons were refused a driving licence; 66.6 p.c. of this number were professional and 38.4 p.c. unprofessional drivers. The ground for disqualification referred to the presence of squint - 40.9 p.c., low visual acuity - 29.4 p.c., disturbances in color discrimination - 8.2 p.c., and three-dimensional vision - 4.4 p.c.