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- Real-time blink detection as an indicator of computer vision syndrome in real-life settings: an exploratory studyPublication . Lapa, Inês; Ferreira, Simão; Mateus, Catarina; Rocha, Nuno; Rodrigues, MatildeWith the increase in the number of people using digital devices, complaints about eye and vision problems have been increasing, making the problem of computer vision syndrome (CVS) more serious. Accompanying the increase in CVS in occupational settings, new and unobstructive solutions to assess the risk of this syndrome are of paramount importance. This study aims, through an exploratory approach, to determine if blinking data, collected using a computer webcam, can be used as a reliable indicator for predicting CVS on a real-time basis, considering real-life settings. A total of 13 students participated in the data collection. A software that collected and recorded users’ physiological data through the computer’s camera was installed on the participants’ computers. The CVS-Q was applied to determine the subjects with CVS and its severity. The results showed a decrease in the blinking rate to about 9 to 17 per minute, and for each additional blink the CVS score lowered by 1.26. These data suggest that the decrease in blinking rate was directly associated with CVS. These results are important for allowing the development of a CVS real-time detection algorithm and a related recommendation system that provides interventions to promote health, well-being, and improved performance.
- Síndrome Visual do Computador em trabalhadores de escritório: um estudo de casoPublication . Alves, Mónica; Pina, Ana; Mateus, Catarina; Rodrigues, MatildeThis study aims to characterize the Computer Vision Syndrome (CVS) among the office employees of a social solidarity institution. A total of 102 workers, aged between 20 and 63 years, were included. The CVS-Q questionnaire was used to identify workers with CVS. In addition, personal and work aspects were characterized, namely gender, age, pre-existing eye diseases, number of years and hours/day of work with computer. The results showed that of the total number of workers evaluated, 60.6% had CVS. A higher prevalence of CVS was observed among female. However, no relationship was observed between the remaining variables under study and the CVS. The results of this study emphasize the importance of an intervention program at CVS level, in order to promote behaviors among workers that reduce its prevalence.
- Ergonomic intervention program for office workers: a case study about its effect in computer vision syndrome and musculoskeletal discomfortPublication . Cardoso, Bárbara; Mateus, Catarina; Magalhães, Rúben; Rodrigues, MatildeThis study aims to develop and implement an ergonomic intervention program at the workplace of knowledge workers, and to evaluate its impact on the reduction of Computer Vision Syndrome (CVS) and musculoskeletal symptoms. 84 workers were part of the study (mean age 43.2 ± 9.7 years). The intervention included training, delivery of a packaging of artificial tears, and adjustments in workstations. It was conducted intensively along 6 weeks. Data was collected on-site, with questionnaires administered pre-intervention, 2 months after, and 4 months after. Participants exhibited behavioural changes, especially in workplace adjustments and visual rest. By the intervention’s end, over 90% had correctly adjusted screens and adopted appropriate postures, while 42.7% adhered to the 20x20x20 rule. CVS severity and prevalence decreased, but not significantly across the three time points. Significant improvements were observed in upper back and neck musculoskeletal symptoms at the end of workdays. Findings suggest that an ergonomic intervention program can benefit employees by reducing visual and musculoskeletal symptoms.