Seven cases of workers selected among 150 who had undergone psychiatric treatment at the Workers' Health Reference Centers in Santo Amaro and André Gabois from 1994 to 1997 were presented for a detailed analysis characterizing work situations and discussing definition of the diagnosis and causal connections with work. The qualitative case study provides a thematic analysis of the patient history and files. Work situations are characterized by: unhealthy working conditions, problems related to work organization, inadequate human resources management, and urban violence. Symptoms included: fear, anxiety, depression, nervousness, tension, fatigue, malaise, loss of appetite, sleep disorders, and psychosomatic disorders (gastritis, hypertension); in addition, workers were unable to forget about work while off the job. Diagnosis varied. Three cases involved post-traumatic syndrome. Two cases involved organic psychosis linked to accidents or exposure to neurotoxic chemical products. Cases also included neurotic syndromes of fatigue, depression, and paranoia, as well as adaptation and reaction to acute stress. In all of the cases it was possible to relate the clinical picture to the work situation.
The aims of this study were to investigate work conditions, to estimate the prevalence and to describe risk factors associated with Computer Vision Syndrome among two call centers´ operators in São Paulo (n = 476). The methods include a quantitative cross-sectional observational study and an ergonomic work analysis, using work observation, interviews and questionnaires. The case definition was the presence of one or more specific ocular symptoms answered as always, often or sometimes. The multiple logistic regression model, were created using the stepwise forward likelihood method and remained the variables with levels below 5% (p < 0.05). The operators were mainly female and young (from 15 to 24 years old). The call center was opened 24 hours and the operators weekly hours were 36 hours with break time from 21 to 35 minutes per day. The symptoms reported were eye fatigue (73.9%), "weight" in the eyes (68.2%), "burning" eyes (54.6%), tearing (43.9%) and weakening of vision (43.5%). The prevalence of Computer Vision Syndrome was 54.6%. Associations verified were: being female (OR 2.6, 95% CI 1.6 to 4.1), lack of recognition at work (OR 1.4, 95% CI 1.1 to 1.8), organization of work in call center (OR 1.4, 95% CI 1.1 to 1.7) and high demand at work (OR 1.1, 95% CI 1.0 to 1.3). The organization and psychosocial factors at work should be included in prevention programs of visual syndrome among call centers´ operators.
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