Аннотация
To study the physiological condition of the heart during the day Holtermonitoring was used, based on the ECG techniques. This monitoring system consists of registering a blog MT-101 and MT-200 program intendedfor analysis in the computer. For the research were taken students aged20-21 years, who were divided into two groups: students with normalvision system istudenty suffering from myopia. Health students of bothgroups were normal, without any impaired cardiac function. The objects ofthis study is the electrocardiogram of the heart of both groups of studentswere identified set of the QRS, frequency variability analysis heart sokroscheniya. When analyzing the differences in the QRS set were identifiedbetween the two groups, with registered increased rates on activity andreduced them alone. When comparing the results of normal students andstudents suffering from myopia were found statistically significant differences in the set of QRS, and in the analysis of heart rate variability werenot significant changes.Key words: variability, short-sightedness, ECG, Holter monitoring,electromagnetic field, WiFi, еnvironment.