Objective To assess the effect of a visual health management intervention program on visual display terminal (VDT) operation behavior of university students,and to establish a management model for VDT operation among this population.
Methods Totally 106 freshmen were chosen from a university in Zhejiang province and divided into an intervention group and a control group by random assignment,each with 53 students.The intervention group received a six-month-visual-health-management program on VDT operation which went through three steps,i.e.information collection,risk assessment,and implementation of intervention;while no intervention measure was given to the control group.The detection rates of VDT related visual symptoms and the prevalence of behavioral risk factors for VDT operation and lifestyle before and after the intervention were compared.
Results At baseline,no statistical difference in the detection rates of visual symptoms was found between the two groups (P > 0.05);but after the six-month program,the detection rates of visual symptoms in the intervention group declined obviously compared with the control group(P < 0.01) and also with the baseline values (P < 0.01).The prevalence rates of behavioral risk factors for VDT operation and lifestyle significantly decreased after the intervention (P < 0.05 or 0.01).The total effectiveness rate of the program reached 84.91%.
Conclusion The visual health management intervention program for VDT operation demonstrates a remarkable effect on improving university students'VDT operation related visual health.
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