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Scholars Journal of Applied Medical Sciences | Volume-7 | Issue 04
Evaluation of Various Factors Responsible For Eye Strain in Video Display Terminal Users
Rajender S Chauhan, Ashok Rathi, J P Chugh, Sapna Chanana, Ravinder Kumar
Published: April 30, 2019 | 69 103
DOI: 10.36347/sjams.2019.v07i04.049
Pages: 1606-1612
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Abstract
Computer usage is increasing day by day and using one can be quite demanding on the eyes. Constant eye movements including continuous focusing and aligning, the problem of the computer screen that flickers and can cause glare, all lead to eye strain. Computer users also tend to blink less when looking at a video screen, leading to dry eyes. We conducted a study on 100 subjects working on computers for a period of 4 hours or more daily. A detailed anterior segment examination was supplemented by refraction workup, measurement of NPA and NPC, Schirmer’s test and tear film breakup time. Symptoms were suggestive of ciliary body strain and ocular surface dryness. Long hours of near vision focusing seem to be causing asthenopic symptoms. Low blink rate and air conditioning dryness were etiological for the ocular surface dryness.