[Comparative evaluation of the usefulness of the methods of studying binocular vision for purposes of vocational guidance]. / Porównawcza ocena przydatnosci metod badania widzenia obuocznego dla potrzeb poradnictwa zawodowego.

The deficiency of binocular vision calls for an absolute contraindication to perform a number of occupations. It is not easy to evaluate the binocular vision disturbance, especially in young people. Therefore it was decided to check the binocular vision by six methods and compare the results. Among 199 pupils of the seventh form of primary schools, the following binocular vision disturbances have been found: in 18% of subjects on stereometer, in 15% on a projector with polarizing glasses, in 14% lack of protective reflexes, in 13% on stereoscope, in 11,6% on synoptophore and lack of ambiopia after using the prism in 9% of subjects. All the tests yielded negative findings in 5,5% of subjects. The obtained data suggest that it is not enough to use just one method for a thorough determination of binocular vision.

[Evaluation of lens transparency in persons exposed to electromagnetic radiation of 27--30 MHz frequency]. / Ocena przeziernosci soczewek u osób zatrudnionych w kontakcie z promieniowaniem elektromagnetycznym o czestotliwosci 27--30 MHz.

55 women occupationally exposed to lasting electromagnetic radiation at 27--30 MHz frequency and 101 persons from control group were examined with reference to the status of lens transparency. No statistically significant differences between the frequency of lens opacity in the exposed and control group were found. No dependence of opacity on duration of employment was found, either. An increase in lens opacity was proportional to age both in the exposed and control group.