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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2018; 64(5): 47-53


ALTERED VISUAL FUNCTION AND ITS RECOVERY IN TEENAGERS WITH EMETROPICAL REFRACTION UNDER VISUAL COMPUTER LOAD

S.N. Vadzuk1, N.Y. Ulianutska2, N.O. Byelikova2 S.Y. Indyka2, Y.S. Vadzuk1, M.O. Sopiga1

  1. Ivan Horbachevsky Ternopil State Medical University, Ukraine
  2. Lesya Ukrainka Eastern European National University in Volyn, Ukraine
DOI: https://doi.org/10.15407/fz64.05.047

Abstract

60 healthy students of 14-16 years (120 eyes) with emetropical refraction without ophthalmological, medical and mental deviations were examined. Visual acuity, its threshold value (separation and perception minima) and contrast sensation were studied using special techniques. Our study shows a decrease in the visual acuity after one-hour continuous visual load on the computer monitor. The 15-minute passive rest is revealed to have no essential effect on this indicator. It should be noted that recovery exercises for 15 minutes after one-hour loading increased the visual acuity almost to the initial level. A significant reduction in the separation and perception of minima rates was also determined after visual computer load. Short passive rest has not affected the value of the first indicator and to some extent improved the value of the second one. However, a series of restorative exercises led to a significant improvement in the separation minima of both eyes and perception minima almost to the original state. The obtained results show a deterioration of the contrast sensitivity after visual load and no change of it after a 15-minute passive rest. However, a significant improvement of the contrast sensitivity was observed after exercises. Thus, the indicators of the visual functions: visual acuity, its thresholds components (separation and perception minima) and contrast sensitivity in teenagers decrease under the influence of operating PC during 45 minutes, but the 15-minute set of recovery exercises of the author’s program “Saving and Eyesight Recovery” gets them closer to the original level.

Keywords: impact of computer; teenagers; visual acuity; separation and perception minima, contrast sensitivity

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