Risk factors for computer visual syndrome (CVS) among operators of two call centers in São Paulo, Brazil

Background:Almost all institutions, colleges, universities and homes today were using computer regularly. Very little research has been carried out on Indian users especially among college students the effects of computer use on the eye and vision related problems.Aim:The aim of this study was to assess the prevalence of computer vision syndrome (CVS) among medical and engineering students and the factors associated with the same.Subjects and Methods:A cross-sectional study was conducted among medical and engineering college students of a University situated in the suburban area of Chennai. Students who used computer in the month preceding the date of study were included in the study. The participants were surveyed using pre-tested structured questionnaire.Results:Among engineering students, the prevalence of CVS was found to be 81.9% (176/215) while among medical students; it was found to be 78.6% (158/201). A significantly higher proportion of engineering students 40.9% (88/215) used computers for 4-6 h/day as compared to medical students 10% (20/201) (P < 0.001). The reported symptoms of CVS were higher among engineering students compared with medical students. Students who used computer for 4-6 h were at significantly higher risk of developing redness (OR = 1.2, 95% CI = 1.0-3.1,P = 0.04), burning sensation (OR = 2.1,95% CI = 1.3-3.1, P < 0.01) and dry eyes (OR = 1.8, 95% CI = 1.1-2.9, P = 0.02) compared to those who used computer for less than 4 h. Significant correlation was found between increased hours of computer use and the symptoms redness, burning sensation, blurred vision and dry eyes.Conclusion:The present study revealed that more than three-fourth of the students complained of any one of the symptoms of CVS while working on the computer.

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“…[216] Similar finding of 54.6% of prevalence of burning sensation was reported by Costa et al ., among call center workers in Brazil. [17]…”

Section: Discussionmentioning

confidence: 99%

Computer vision syndrome and associated factors among medical and engineering students in Chennai

Logaraj¹,

Madhupriya²,

Hegde³

2014

Ann Med Health Sci Res

197

256

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“…A heavier workload might lead to low mental acuity, leading to disorders of homoeostasis that disturb lacrimal secretions (Sa et al. ). Interestingly, the prevalence of asthenopia decreased sharply from the freshman to sophomore years.…”

Section: Discussionmentioning

confidence: 99%

Correlation between handheld digital device use and asthenopia in Chinese college students: a Shanghai study

Deng

Wang

et al. 2018

Acta Ophthalmologica

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Purpose: The purpose of this study was to investigate the use of handheld digital devices and the prevalence of self-reported asthenopia among college students in China and their potential relationship. Methods: Five thousand students were randomly assessed using a self-reported asthenopia questionnaire. The students' demographic characteristics and habits regarding digital device use were recorded. Univariate analysis was performed to select potential risk factors, and multivariate logistic regression was used to estimate the odds ratios for the selected risk factors of interest. Results: Among the 4786 students who completed the survey, the prevalence of asthenopia was 53.3%. Multivariate analysis revealed significant relationships between asthenopia and each of the following: level of digital reliance (OR 1.350, 95%CI: 1.230-1.481), workload, time spent on computer per day, sex and time spent on handheld digital devices in bed and at desk. Aerobic exercise duration (OR 0.912, 95%CI: 0.839-0.990) was found to be strong predictor of less asthenopia complaints.Conclusion: Asthenopia appears to be common among college students in China. Preventative measures against asthenopia include limiting the amount of time spent using digital devices in bed (<0.5 h), adopting a posture of lying on one's back while doing so and engaging in aerobic exercise for more than one hour per day. Furthermore, studies on this topic are needed.

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“…Blurred vision is a common symptom experienced after prolonged computer use . This may result from an accommodative infacility or an inaccurate accommodative response (that is, lead or lag) during visual display unit use.…”

Section: Symptoms and Risk Factorsmentioning

confidence: 99%

Management of digital eye strain

Coles-Brennan

Sulley

Young

2019

Clinical and Experimental Optometry

201

133

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Digital eye strain, an emerging public health issue, is a condition characterised by visual disturbance and/or ocular discomfort related to the use of digital devices and resulting from a range of stresses on the ocular environment. This review aims to provide an overview of the extensive literature on digital eye strain research with particular reference to the clinical management of symptoms. As many as 90 per cent of digital device users experience symptoms of digital eye strain. Many studies suggest that the following factors are associated with digital eye strain: uncorrected refractive error (including presbyopia), accommodative and vergence anomalies, altered blinking pattern (reduced rate and incomplete blinking), excessive exposure to intense light, closer working distance, and smaller font size. Since a symptom may be caused by one or more factors, a holistic approach should be adopted. The following management strategies have been suggested: (i) appropriate correction of refractive error, including astigmatism and presbyopia; (ii) management of vergence anomalies, with the aim of inducing or leaving a small amount of heterophoria (~1.5 Exo); (iii) blinking exercise/training to maintain normal blinking pattern; (iv) use of lubricating eye drops (artificial tears) to help alleviate dry eye-related symptoms; (v) contact lenses with enhanced comfort, particularly at end-of-day and in challenging environments; (vi) prescription of colour filters in all vision correction options, especially blue light-absorbing filters; and (vii) management of accommodative anomalies. Prevention is the main strategy for management of digital eye strain, which involves: (i) ensuring an ergonomic work environment and practice (through patient education and the implementation of ergonomic workplace policies); and (ii) visual examination and eye care to treat visual disorders. Special consideration is needed for people at a high risk of digital eye strain, such as computer workers and contact lens wearers.

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Risk factors for computer visual syndrome (CVS) among operators of two call centers in São Paulo, Brazil

Cited by 50 publications

References 9 publications

Computer vision syndrome and associated factors among medical and engineering students in Chennai

Computer vision syndrome and associated factors among medical and engineering students in Chennai

Correlation between handheld digital device use and asthenopia in Chinese college students: a Shanghai study

Management of digital eye strain

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