Working in electronic factories with a high-pressure of time, working intensity and requirement of responsibility and accuracy was a workload affecting worker's health, especially visual functions. A descriptive cross-sectional study was carried out to assess some visual functions of workers in electronic manufacturing companies by using Visiotest Model 2000 Vision tester equipment. The results showed that in the chromatic vision test: 54.0 percent fight deficit, 3.7 percent chromato pseudopsis; in the horizontal squint test: 10.4 percent esophoria, 71.8 percent exophoria; in vertical squint test; 23.3 percent left hyperphoria, 3.9 percent right hyperphoria; in the haploscopic vision test: 21.9 percent at medium level, 39.2 percent at lowlevel; in the E letter test: 5.2 percent at low level; in the combined binocular vision test: 3.7 percent at low level; in the balanced orthophoria test: 2.1 percent at low level.
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