Objective To investigate the manifestation of visual field abnormalities(VFA)in video display terminal(VDT)users and to assess potential risk of glaucoma in heavy VDT users.
Methods In this cross-sectional study, 208 VDT users were recruited to complete questionnaires and eye examinations, consisting of visual acuity, diopter, fundus, intraocular pressure, and visual field. According to the computer workload index, the participants were classified into three groups:light users(1-3), moderate users(4-8), and heavy users(9-16). The data were analyzed by χ2 test.
Results Among the 208 participants, 139 showed refractive errors, and 125 had myopia; 51 and 157 cases reported positive and negative VFA, respectively. Heavy VDT users with refractive errors showed a significant positive association with VFA. Of the 39 cases diagnosed with open angle glaucoma, 31 had refractive errors and 26 had myopia(66.7%).
Conclusion Heavy VDT users with refractive errors show an elevated incidence of VFA which could be a risk factor of glaucoma and myopia may contribute to VFA.
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