The study covered 250 workers, aged 20-63 years, employed at workposts over 3 meters high. We analysed visual acuity, refraction, anterior segment, eye ground, visual field, colour vision and binocular vision. The study revealed that 20% of persons examined lack the stereoscopic vision ability. In conclusion it is suggested to use combined methods in order to evaluate binocular vision and certify ability to work at high workposts.