PECULIARITIES IN VISUAL FUNCTIONS AND THEIR RESTORATION IN TEENAGERS WITH EMMETROPIC REFRACTION AFTER WORK ON COMPUTERS AND THE METHOD OF ITS REDUCTION
Journal Title: Antropomotoryka. Journal of Kinesiology and Exercise Sciences - Year 2017, Vol 27, Issue 79
Abstract
Modern IT penetration leads to the sharing with usage of information devices, especially PCs, in teaching and learning process. Nowadays, according to the specialists’ research, in Ukraine above 9,5 million people are PC users (in fact, one in five people), but half of them is children and teenagers. As a result the changes in functional activity of different organs and systems are produced, but work with video-display terminals exerts the most influence on visual analyzer (Cochina 2009, Kovtun 2008). Goal of research: to study the visual acuity and contrast sensitivity in senior pupils while working at the computer monitor, and when disorders are determined to offer their effective correction. Methods and materials: Sixty healthy senior pupils (120 eyes) with emmetropic refraction were examined. The visual acuity and contrast sensitivity were investigated by special computer techniques. At the first stage the effect of one-hour uninterrupted computer work on visual functions was studied. Their state after a fifteen-minute passive rest was determined at the second stage. The author’s program “Eyesight Preservation and Restoration” that includes special exercises for eyes, upper limb girdle and neck with the elements of breath-holding, followed by the determination of the parameters in question was used at the third stage. Results of the research: We have found decrease in the visual acuity by 7.4% after one-hour constant visual strain on the computer monitor. Conspicuous is the fact that doing the restoration exercises for fifteen minutes after one-hour visual strain increased the visual acuity by 7.2%. It is worth pointing out the contrast sensitivity increases to 36,1 ± 1,42% and 36,08 ± 1,65% respectively in the right eye and in the left eye after one-hour visual workload. This indicates the contrast sensitivity decrease in the eyes and the reduction of successful implementation of visual work under the changes in brightness. Conclusions: Thus, the indices of the visual functions, such as the visual acuity and contrast sensitivity change under the impact of the work on the PC, but the fifteen-minute set of the restoration exercises brings them closer to the baseline. <br/><br/>
Authors and Affiliations
Stepan Vadzuk, Nataliia Ulianytska, Svitlana Indyka, Olga Andriychuk, Olena Yakobson
Keywords
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