Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: Effects of Different Add Powers on the Comfort and Productivity of Computer Users With Fixed or Free Head Movement
Brief Summary: The aim of this study is to examine the relationship between optical blur from poor refractive corrections (glasses) of older workers using computers and their productivity and comfort in the workplace. The investigators believe that improving the visual status of subjects who use computers will have a beneficial effect on productivity and visual comfort.