The impact of quality of visual materials inputed in electronic teaching tools on the risk of violations of functional state of the organism

Objective: analysis of the influence of the degree of ophthalmoergonomics of visual materials submitted to electronic teaching aids on the risk of developing violations of the functional condition of the organism (FCO), taking into account the difficulty of educational subjects. Material and methods. The study involved 112 primary school students. The study of the FCO was carried out before and after lessons of varying difficulty and ophthalmoergonomics of visual materials according to diagnostic tests: a correction test, a simple sensorimotor reaction, determining the level of the critical frequency of light flickers. Relative risk (RR) and odds ratio (OR) were calculated. Results. It has been established that at the end of difficult lessons, when using ophthalmic non-ergonomic materials, the chance of developing visual fatigue is 2.4 times higher, and the risk is 1.5 times higher, the chance of a decrease in mental performance is 3.3 times higher, the risk is 2 times, the chance the development of fatigue in the central nervous system is 2.5 times higher, and the risk is 2 times higher. When workplaces are located in the zone of visual discomfort, the chances and risks of a violation of the FCO increase. Conclusion. The assessment of the impact of using visual materials of varying degrees of ophthalmoergonomics in lessons of varying difficulty showed a high degree of risk of developing adverse changes in the FCO by the end of the lessons when using ophthalmo non-ergonomic visual material in children whose desks were located in the discomfort zone.