Visual Symptoms Among Non-presbyopic Video Display Terminal (VDT) Operators In Owerri, Nigeria

Megwas, A. U. and Aguboshim, R. C.


Visual symptoms appear to be the most frequent and most disturbing of computer associated health problems. This study was aimed at investigating the most prevalent visual symptoms encountered among Video Display Terminal (VDT) users in Owerri municipality prior to presbyopic onset. A total of one hundred and eighty-six (186) respondents, comprising 57 males and 129 females in the age bracket of 17-34 years(mean age: 25.83±4.90 years) were divided into two (2) groups: group A comprises of forty (40) non-VDT users and, group B comprises of one hundred and forty-six (146) VDT users. Each group was investigated, using pre-sampling criteria of visual acuity screening and ocular health assessment, before being handed a well-structured questionnaire, to be filled individually. Data consequently obtained revealed that headache (41.78%); eyestrain (26.72%), pain (31.51%) and lacrimation (19.86%) were the most prevalent visual symptoms among non-presbyopic, Owerri-based VDT users. A comparative one-tailed statistical analysis using the Z-test (0.05) revealed that VDT usage increases the prevalence of visual symptoms among users (P> 0.05). It was also revealed that Owerri-based, non-presbyopic VDT operators are exposed to environmental risks factors hazardous to them while working. Consequently, this study suggests that intervention programs aimed at ameliorating these problems and the predisposing factors are introduced and sustained, to forestall the outbreak of a dangerous health problem due to VDT usage.

Keywords: Visual symptoms, prevalence, Video Display Terminals, non-presbyope, eyestrain.

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