Українська English

ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)

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


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


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


  1. Akhmadeev PP, Timchenko TV, Tupiev ID. The method of investigation in higher visual functions for diagnosing computer astenopia. Proceedings of the International Scientific Conference. 2007:23-4.
  3. Gary M. Human-Computer Interaction: Psychological Aspects of the Human Use of Computing. Ann Rev Psychol. 2008;54:491-516.
  5. Berezutskyi VV, editor. Fundamentals of labor protection. Kh: Fakt; 2007:423.
  7. Somov EE, Hatsu MV, Platonova TL, Zhikhareva SI, Medentseva MA. Frequency-contrast visometry in healthy children of various ages. Oftalmol Zh. 1992;(2):98-101.
  9. Kochina ML, Podrihalo LV, Yavorskii AB. Modern factors of visual impact and their influence on the visual analyzer of pupils. Int Med J. 1999;(2):133-5.
  11. State sanitary rules and norms for working with visual display terminals of electronic computing machines: DSanPIN K. MOZ Ukrainy; 2003.
  13. Demirchohlian HH. How to protect and improve the eyesight. M.; 1995:7-115.
  15. Seniakin DO, Seniakina AC, Vadzyuk SN, Vavryschuk TA. The determination method of visual acuity. Ukraine ratent 50511. 2002 Oct 15.
  17. Seniakin DO, Vadzyuk SN, Vavryschuk TA. The determination method of contrast sensation of the eye. Ukraine patent 66125. 2004. Apr 15.
  19. Ulianutska NY, Vadzyuk SN, Indyka SY. Programme «Vision Saving and Recovering Program». Ukraine ratent 71968. 2017. May 16.
  21. Hubler EV, Henkin AA. The use of nonparametric statistical criteria in biomedical research. Leninhrad: Medicine. 1973:45-8.
  23. Boos SR et al. Work at video display terminals. An epidemiological health investigation of office employees. III. Ophthalmological examination. Scand J Work, Environ and Health. 1985;11(6):475-81. CrossRef PubMed
  25. Feihin AA, Zak PP, Larina TYu, Holikov PE. Changes in the spatial-contrast sensitivity during work with liquidcrystal monitors and with spectral correction of vision. Fiziolohiia cheloveka. 2005;31(6):123-5.
  27. Savliuk S. Functional state assessment in 6-10 year-old children with visual deprivation in the process of physical education. Physical education, sports and health culture in modern society. 2016;36(4):66-71.
  29. Shevchuk VH, editor. Age features of visual function in pupils. Ternopil: Volia; 2004.

© National Academy of Sciences of Ukraine, Bogomoletz Institute of Physiology, 2014-2024.