PubMed Health⌕ Search

Biomedical subjects

R Toncheva

Publications and source records attributed to R Toncheva.

2 recordsLinked to original sources

[Various occupational diseases of the eyes caused by ultraviolet radiation].

Studies are performed on 87 workers--electric welders (for some of them they continued several years), 68.9% of the subjects have been in contact with ultraviolet radiation for a period of more than 10 years (length of service). There are data for passed acute form of electric ophthalmia, average 6.11 times during the length of service in workers with length of service up to 10 years and 12.1 times in workers with length of service above 10 years. In 11.82% of the workers a chronic form of phtoophthalmia is observed. After observation, for the first time in this country is described specific radiation cataracta in 24.13% of workers--electric welders in contact with ultraviolet radiation during their length of service--above 10 years. The problem of cataractogenesis of ultraviolet rays in electric welding processes is discussed.

Adult↗

Epidemiological studies on occupational eye pathology.

We examined 522 persons exposed to different types of non-ionizing radiation (UV, IR lasers) in the working environment. The control group consisted of 250 persons. The clinico-statistical analysis of occupational eye pathology depending on etiological factors, exposure time and age is presented. Specific cataracts were found in 38.37% of electric welders and in 11.4% of metal workers. The number of cataracts increased with exposure time and in elderly workers. We also observed six macular incidents when working with lasers. The results show the potential hazardous factors of the working environment and the corresponding eye impairments.

Adult↗