Factors Related to Inappropriate Far and Near Vision Among Circuit Board Production and Assembly Workers: a Case Study of an Electronic Factory in Prachinburi Province

Abstract

inappropriate visual acuity, considering both far and near vision, among 287 circuit board production and assembly workers. Data on personal and working factors were collected using questionnaires, while visual acuity and illuminance levels were obtained from record forms. Data were analyzed using descriptive statistics and multiple logistic regression. The prevalence of inappropriate far and near vision was 34.49% and 15.27%, respectively. Factors associated with inappropriate far vision included being ages 40 and above (AOR = 0.13, 95%CI: 0.03-0.57, p<0.05), working years of more than 5 years (AOR = 15.44, 95%CI: 3.49-68.33, p<0.05), taking 4-6 breaks per day (AOR = 3.08, 95%CI: 1.40- 6.78, p<0.05), and an average non-digital eye break of less than or equal to 10 minutes per day (AOR = 8.53, 95%CI: 3.91-18.63, p<0.05). Regarding inappropriate near vision, the associated factors were working years of 11–15 years (AOR = 0.04, 95%CI: 0.00-0.30, p<0.05), an average non-digital eye break of less than or equal to 10 minutes per day (AOR = 3.08, 95%CI: 1.40-6.78, p<0.05), and illuminance levels of 401–500 lux (AOR = 7.93, 95%CI: 3.10-20.29, p<0.05). Therefore, employers should provide appropriate illuminance levels and increase the number of daily eye breaks to reduce risks of vision for workers.