1 P. L. Shupyk National Medical Academy of Postgraduate Education, Kyiv
2 State Institution "Institute for Occupational Health of the National Academy of Medical Sciences of Ukraine", Kyiv
3 Bogomolets National Medical University, Kyiv
Introduction. Coal mining is one of the priority economic sectors of Ukraine. The working conditions in this sector are the most harmful and dangerous to the health of workers. Currently, the occurrence of risks of visual organ pathology is poorly investigated in workers.
Purpose – to determine risks of occurrence of ophthalmic pathology among underground workers of coal mines, who are affected by harmful production factors.
Materials and methods. The working conditions and ophthalmic morbidity among underground workers of 16 coal mines (38,8 thousand people) were studied. The indices of illumination and dust (coal) air pollution at workplaces of 10 occupational groups of underground workers are investigated. Using a method of epidemiological retrospective study ("case – control") there have been defined indicators of the odds ratio (OR) in occurrence of ophthalmic diseases among workers, exposed to the studied harmful environment factors (exceeding hygienic standards).
Results. The underground workers in coal mines are exposed to harmful production factors that affect the visual system: "Direct" action – low artificial illumination and a significant coefficient of illumination heterogeneity; coal dust, containing crystalline SiO2; "indirect" effect – methane, vibration, unfavorable microclimate, severity and intensity of work. In the prevalence of visual organ pathology the following harmful production factors play a significant part for underground workers: eyelid diseases – low illumination (2.7), methane (2.6), coal dust (2.4), work intensity (2.1); corneal diseases – coal dust (4.7), low illumination (3.6), methane (2.3); diseases of the choroid and retina – severity of work (1.7); nystagmus – low illumination (16,4), coal dust (7.5), methane (4.2); eye injuries – low illumination (9.9), coal-rock dust (9.4), methane (7.7), severity of work (7.0), vibration (4.6) (p <0.05).
Conclusions. The obtained data are the basis for developing measures on prevention of the work-related pathology in underground workers in coal mines, and a scientific reason for further in-depth clinical study of the state of morpho-functional changes in the visual analyzer in these workers.
1. Bezverbnyy, P. S., Pyshnov, H. Yu. 2016, Actual problems and the state of health of coal mine workers in Ukraine, Collection of materials of the scientific-practical conference «Actual problems of diagnostics, treatment and prevention of occupational diseases in Ukraine», Kryvyi Rih, pp. 53–58 (in Ukrainian).
2. Varyvonchyk, D. V., Blahun, I. V. 2016, Peculiarities of functioning of the visual analyzer in complicated conditions of illumination in coal mines, Collection of scientific works of P. L. Shupyk National Medical Academy for Postgraduate Education, v. 25, pp. 98–104 (in Ukrainian).
3. Varyvonchyk, D. V., Blahun, I. V. 2016, Ophthalmological morbidity of underground workers in coal mines, as a result of periodic medical examinations, Collection of materials of the scientific-practical conference «Actual problems of diagnostics, treatment and prevention of occupational diseases in Ukraine», Kryvyi Rih, pp. 36–40 (in Ukrainian).
4. State Statistics Service of Ukraine, 2016. Condition of work of hired workers in 2015, Statistical bulletin, Kyiv, 33 p. (in Ukrainian).
5. Libanova, E. М. 2015. «Restoration of Donbas: assessment of socio-economic losses and priority directions in the state policy (stenography of the scientific report at the meeting of the Presidium of the NAS of Ukraine, September 23, 2015)», Bulletin of the National Academy of Sciences of Ukraine. no. 11, pp. 13–25 (in Ukrainian).6. Nahorna, A. M., Sokolova, M. P., Vitte, P. M. [et al.] 2016, «The state of occupational morbidity in the period of legal changes in Ukraine», Ukr. J. Occup. Health, no. 1, pp. 3–17 (in Ukrainian).