Prevalence of Computer Vision Syndrome and Its Relationship with Ergonomic and Individual Factors in Presbyopic VDT Workers Using Progressive Addition Lenses

Sánchez-Brau, Mar; Domenech, Begoña; Brocal-Fernández, Francisco; Quesada, José A.; Seguí-Crespo, Mar

doi:10.3390/ijerph17031003

Cited by 61 publications

(99 citation statements)

References 54 publications

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“…The CVS‐Q © has good psychometric properties derived from the Rasch Analysis, with sensitivity and specificity values of 75.0% and 70.2%, respectively. This questionnaire has been used in Spanish workers 20‐23 and its translation, cultural adaptation and validation into different languages are also being carried out 24…”

Section: Introductionmentioning

confidence: 99%

Computer vision syndrome prevalence according to individual and video display terminal exposure characteristics in Spanish university students

et al. 2020

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Aim To estimate the prevalence of computer vision syndrome (CVS) in university students and its relationship with sociodemographic and optical correction factors and exposure to video display terminal (VDT). Methods This cross‐sectional study included 244 Spanish university students who responded to an anamnesis, a VDT exposure questionnaire and the Computer Vision Syndrome Questionnaire (CVS‐Q©). A descriptive analysis was performed and the prevalence of CVS was calculated. Logistic regression models were used to measure the association between CVS and the variables studied. Results The mean age was 20.7 years (SD = 2.1), 57% were women, 78.3% used VDTs ≥ 2 hours/day to study. The prevalence of CVS was 76.6%, and the most frequent symptoms were headache and itching. In the crude analysis, being a woman, using glasses daily and to study, and a longer VDT use to study and in total were associated with a higher prevalence of CVS; while in the older group, the prevalence was lower. In the multivariate model, VDT use to study was associated with a greater probability of CVS (aOR: 3.43; 95%CI: 1.03‐11.42), and being between 22 and 29 years was associated with a lower probability of it (aOR: 0.36; 95%CI: 0.15‐0.89). Conclusion CVS has a high prevalence amongst Spanish university students. The most affected are the younger ones and those who use VDTs for longer hours to study. It is essential to continue investigating the influence of the type of tasks conducted with VDTs on CVS and thus to establish the preventive measures to reduce this syndrome.

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Section: Introductionmentioning

confidence: 99%

Computer vision syndrome prevalence according to individual and video display terminal exposure characteristics in Spanish university students

et al. 2020

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“…Sample size was calculated using WHO sample size calculator taking prevalence as 74.3% from a recent study. 10 Estimated sample size was found to be 295. However, estimated sample size was inflated to cater for nonresponses and to assess a large number of participants and gather maximum possible data and enhance generalizability.…”

Section: Methodsmentioning

confidence: 96%

Computer Vision Syndrome (CVS) and its Associated Risk Factors among Undergraduate Medical Students in Midst of COVID-19

et al. 2020

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Purpose: To determine the frequency of computer vision syndrome and its associated risk factors among under graduate medical students. Study Design: Descriptive Cross–sectional study. Place and Duration of Study: Gujranwala Medical College and Rawalpindi Medical University, Pakistan from 5th August to 28th August, 2020. Methods: A validated self-designed questionnaire was used for this study. The survey instrument was tailored from a published questionnaire which comprised of questions on demographics, frequency of symptoms of computer vision syndrome, pattern of computer usage and ergonomic practices. Results: Final analysis was run on 326 under graduate medical students. Females were 228 (69%) and 98 (30%) were males. Age of the participants ranged between 17 to 25 years. Overall frequency of CVS was found to be 98.7%. Twenty nine percent students experienced extra ocular complaints and 71% had ocular symptoms. Symptoms of CVS were more commonly observed among those using desktop/laptop at less than forearm length (p = 0.001). Distance of < 12 inches from mobile phone was found to be associated with eye irritation and neck shoulder pain (p = 0.001). Frequency of break of more than 60 minutes was found to be significantly associated with eye irritation (p = 0.002) and excessive blinking and light sensitivity (p = 0.001). The students not using ergonomically comfortable chair were found to suffer more with symptoms of CVS as compared to those using ergonomically designed chair (p = 0.049). Conclusion: Health issues related to excessive use of digital devices has become alarmingly high during COVID-19 pandemic. Symptoms of CVS are significantly associated with distance from digital device and less frequent break intervals. Key Words: COVID-19, Computer Vision Syndrome, Digital eye syndrome, ergonomics, visual display terminals.

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“… 14 , 27 Compared to single vision lenses, variable lens systems are typically more expensive and have restricted optical zones, 27 which can impact individuals’ subjective visual experiences while driving and performing workplace tasks. 28 , 29 …”

Section: Presbyopic Treatment Optionsmentioning

confidence: 99%

Presbyopia – A Review of Current Treatment Options and Emerging Therapies

Katz¹,

Karpecki²,

Dorca³

et al. 2021

OPTH

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Presbyopia is a common age-related vision disorder characterized by a progressive inability to focus on near objects. If uncorrected or under-corrected, presbyopia can significantly impact patients' quality of life. Presbyopia represents an area of considerable unmet need due to its rising prevalence worldwide as the population ages, the high proportion of under-treated individuals in some parts of the world, and the limitations of currently available corrective methods. Progressive or bifocal spectacles are associated with peripheral blur, a restricted visual field and impaired depth perception, which have been linked to an increased risk of falls in the elderly. Contact lens options can be difficult to maintain due to the development of age-related dry eye symptoms and reduced manual dexterity. Other corrective methods involve surgical interventions that modify the optics of the cornea, replace the crystalline lens, or attempt to restore active accommodation. While patients undergoing surgery report satisfactory outcomes post-operatively, many of them eventually require reading glasses. Non-invasive therapies with novel mechanisms of action are currently being investigated; these include miotic agents and UNR844, a lipoic acid choline ester. In this narrative review, available evidence on presbyopia prevalence, quality of life impact and risk factors are described, with a focus on observational studies in nonclinical settings. The diagnosis pathway and patient journey in presbyopia are outlined, and various treatment options are analyzed. The data reviewed herein reveals significant gaps in the provision of vision correction for this common condition, with a paucity of effective, non-invasive treatment options broadly accessible to presbyopic individuals.

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Prevalence of Computer Vision Syndrome and Its Relationship with Ergonomic and Individual Factors in Presbyopic VDT Workers Using Progressive Addition Lenses

Cited by 61 publications

References 54 publications

Computer vision syndrome prevalence according to individual and video display terminal exposure characteristics in Spanish university students

Computer vision syndrome prevalence according to individual and video display terminal exposure characteristics in Spanish university students

Computer Vision Syndrome (CVS) and its Associated Risk Factors among Undergraduate Medical Students in Midst of COVID-19

Presbyopia – A Review of Current Treatment Options and Emerging Therapies

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