Influence of long-term VDT work in accimmidative function

The author studied the influence of visual display terminal (VDT) work on refractive errors, accommodative power, accommodative response/accommondative stimuls ratio (Ar/As), dark foucs of accommodation and resting states in the empry field, comparing before use of VDT and 6 months after the induction in the same subjects. Subjects were 29 workers. The mean VDT work times were 6 hours per day. Before and after 6 months' VDT work, no significant difference were found in refractive errors, accommondative power, Ar/As, dark focus of accommodation and resting states in the empty field. The results suggest that the inhibibtion of accommodation by VDT work reported previously might be temporary.