Computer Vision Syndrome Form 4 (CVS-F4) Survey

Computer vision syndrome (CVS) is a multifactorial syndrome that is defined by the American Optometric Association (AOA) as a group of eye- and vision-related problems that result from prolonged computer, tablet, e-reader and cell phone use. Ocular symptoms are eyestrain, visual blur, eye redness, dry eye, itching, burning or foreign body sensation, lacrimation, difficult eye focusing, near vision troubles and diplopia. Extraocular symptoms are headache, neck and shoulder pain, pain in joints of hands and wrists, sleep disturbances, midnight hunger, depression and tendency to suicide. Most of these symptoms are caused by wrong screen habits known as risk factors or practices which are prolonged screen time, improper lightening conditions, uncomfortable seating postures, uncorrected refractive errors, excessive texting with thumbs, and improper distance from screens, screen glare and small font size.

Computer Vision Syndrome Form 4 (CVS-F4) questionnaire is a novel survey created by the EPK GROUP. CVS-F4 has high reliability (Kuder Richardson 20 Formula .81) and validity (Content Validity Index 0.92 while Confirmatory Factor Analysis revealed Comparative Fit Index 0.896, Tucker Lewis Index 0.860 and Root Mean Square Error of Approximation 0.084). CVS-F4 aims to analyze the outcomes and sequelae of CVS. The outcomes of the CVS-F4 will be analyzed to create a novel Computer Vision Syndrome Survey SMART (CVS-Smart) for accurate CVS diagnosis and prevalence.

Please note that your response to the CVS-Smart is considered as an electronic consent that we could use the resultant data in the scientific research and analysis to improve the CVS-Smart and score. Be sure that there is no personal data required in this questionnaire.