[Effect of various light sources on visual functions in the age aspect. I. Conscious reaction time and the manual spatial visual localization]. / Wplyw róznych zródel swiatla na funkcje wzrokowe w aspekcie wieku. I. Czas swiadomej reakcji i wzrokowa lokalizacja przestrzenna reczna.

The authors present the results of investigations performed in 28 right-handed, normally seeing persons divided into 2 groups: 15 of them were in productive age and 13 in older age. The authors compared the dynamics of the behaviour of the visual functions in dependence on the age of the subjects and the stay in the glow and sodium light. No adverse influence of the sodium light on the hand localization could be detected, instead it seems that it negatively influenced the selective reaction in older productive persons in the sense of an increased number of faults.

[Effect of various light sources on visual functions in the age aspect. II. Visual acuity, the range of accommodation and fusion and the visual field]. / Wplyw róznych zródel swiatla na funkcje wzrokowe w aspekcie wieku. II. Ostrosc wzroku, zakres akomodacji, zakres fuzji, pole widzenia.

The authors performed examinations in 15 middle aged persons and in 13 persons of older productive age in conditions of equivalent illumination, first the glow one, then the sodium one of 600 lx value at the stand of examination. They observed the dynamics of selected visual functions as the time went by in the forenoon hours. The group of older persons tolerated worse the sodium light and in both age groups one could observe the receding of the visual near point. The authors analyze the remaining visual functions in both conditions of illumination.

[Dynamics of visual functions in the conditions of glow and sodium lighting. I. Visual acuity, accommodation, flicker fusion, visual field and heterophoria]. / Ocena dynamiki funkcji wzrokowych w warunkach oswietlenia zarowego i sodowego. I. Ostrosc wzroku, akomodacja, fuzja, pole widzenia, heteroforia.

Investigations of the functions cited in the title were performed in 23 persons with a normal visual system in conditions of equal illumination, first the glow and the next day or later--the sodium one. All the tests were carried out three times in the morning hours evaluating in this way their dynamics as the time goes. The authors are analyzing the degree of the variability of the discussed functions in the time, as well as their behaviour in conditions of applied illumination. The results obtained suggest that in conditions of illumination by a high-pressure sodium lamp no negative characteristics of this source of light emerged. Deterioration of a small degree was observed only in the range of accommodation for near.

[Dynamics of visual functions in the conditions of glow and sodium lighting. II. Time of conscious reaction and visual space-hand localization]. / Ocena dynamiki funkcji wzrokowych w warunkach oswietlenia zarowego i sodowego. II. Czas swiadomej reakcji i wzrokowa lokalizacja przestrzenna reczna.

The authors present the results of investigations performed in 20 young persons with normal sight. A trial of evaluation of the strain of the central nervous system in conditions of various kind of lighting was carried out basing on its close connection with the visual hand localization as well as with the time of the conscious reaction. Analyzed was the behaviour of the quoted functions as the time passed during the morning hours and the results of the examinations obtained in conditions of glow and sodium illumination were compared. They suggest a favourable influence of the sodium light on the discussed functions.