[Ergonomic analysis of the results of radial keratotomy]

The examinations carried out before and in various periods after surgery (in 3, 6, and 12 months) included assessment of the visual function at a short distance (vision acuity, absolute accommodation volume, relative accommodation reserve, ciliary muscle working capacity, vision production, subjective assessment of the vision from a short distance), sensitivity to glare, sensitivity to changed contrast, and dusk vision status. The best condition for studies at a short distance after surgery are created in patients with high myopia, whereas in medium and weak myopia a period of adaptation to close vision is necessary. The studies have revealed a reduced sensitivity to changed contrast and elevated sensitivity to glare. No reliable data on changes in the light sensitivity were available.