Abstract
Purpose. Investigation of the relationship between the indicators of the visual system of patients with visually stressful labor (VLT) and the diagnostic criteria for accommodative asthenopia (AA). Material and methods. 300 patients were examined (mean age 29.4 ± 1.2 years, the presence of myopia in terms of spherical equivalent value (SE) from 1.5 diopters to 8.0 diopters), whose professional daily activities (at least 2 years) are characterized by as VLT with a personal computer (PC). A comprehensive examination of the state of vision was performed according to clinical, functional, subjective and ophthalmo-ergonomic indicators. A multiple regression analysis of 18 indicators of the functional state of the visual analyzer was performed with the parameter of objective accommodation – the coefficient of microfluctuations (CMF) as the basic diagnostic criterion for AA. The assessment of the level of reliability of the mathematical model (regression equation) was based on the calculation of the multiple coefficients of determination (R2). Results. The high (R2 = 0.71) predictive value of the developed mathematical model was determined. It has been established that CMF is closely interconnected (p < 0.05–0.001) with clinical (uncorrected distance visual acuity, SE), functional (indicators of objective accommodography — coefficients of accommodative response, accommodogram growth, etc.), subjective (questionnaire «quality life» «KZS-22») and ophthalmo-ergonomic («Eye» test in conditions of time deficit of presentation of the test object) parameters of the functional state of the visual analyzer. The low information content of traditional methods for studying accommodation indicators (the volume of absolute and relative accommodation) has been determined. Conclusion. The identified parameters can be considered from the standpoint of predictors of accommodative asthenopia in patients with VLT associated with PC. At the same time, the leading indicator of screening diagnostics can be a study of the patient’s «quality of life» according to the «KZS-22» questionnaire, which allows clinically normalizing accommodation disorders from the standpoint of the states of «normal», «subcompensation» and «decompensation» of asthenopia. Keywords: visually stressful work, computer vision syndrome, accommodative asthenopia, objective accommodography, «quality of life»
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