Establishment of an expert system for visual display terminals (vdt) workers' periodic eye checkups

Abstract With the increased use of visual display terminals (VDT) in almost every type of workplace in Japan, there have been increased instances of workers' eyestrain symptoms through viewing objects at relatively near distances. To tackle this problem, we established an“expert system” for analyzing the optimal visual conditions for VDT workers. Utilizing our system, eyestrain symptoms in workers during VDT operation can be greatly reduced, allowing for an improvement in the quality of working life.