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PloS One 2024Occupational musculoskeletal disorders are prevalent in ophthalmic surgeons and can impact surgeons' well-being and productivity. Heads-up displays may reduce ergonomic... (Comparative Study)
Comparative Study
PURPOSE
Occupational musculoskeletal disorders are prevalent in ophthalmic surgeons and can impact surgeons' well-being and productivity. Heads-up displays may reduce ergonomic stress compared to conventional microscopes. This cross-sectional, non-interventional study compared ergonomic experience between heads-up display and conventional ocular microscopes.
METHODS
The study protocol was approved by the independent ethics committee and nonprofit organization MINS Institutional Review Board. An online questionnaire was distributed to a sample of ophthalmic surgeons in Japan with experience operating with heads-up display. The questionnaire captured surgeon-specific variables, the standardized Nordic Musculoskeletal Questionnaire, and custom questions to compare heads-up display and conventional microscope and understand long-term impacts of musculoskeletal disorders.
RESULTS
Analysis was conducted on responses from 67 surgeons with a mean 25 years of practice and 2.7 years using heads-up display. Many surgeons agreed or strongly agreed that heads-up display reduced the severity (40%) and frequency (40%) of pain and discomfort, improved posture (61%), and improved overall comfort (61%). Of respondents who experienced asthenopia (n = 59) or pain/discomfort during operation (n = 61), 54% reported improvement in asthenopia and 72% reported feeling less pain/discomfort since using heads-up display. Overall, 69% reported preference for heads-up display.
CONCLUSION
This study provides novel data on musculoskeletal disorders and the long-term impacts of ergonomic strain reported by ophthalmologists building on existing literature demonstrating ergonomic and other advantages of heads-up display. Future studies with objective ergonomic assessment are warranted to validate these findings.
Topics: Humans; Ergonomics; Ophthalmologists; Japan; Male; Cross-Sectional Studies; Female; Surveys and Questionnaires; Musculoskeletal Diseases; Microscopy; Adult; Middle Aged; Asthenopia; Occupational Diseases; Posture; East Asian People
PubMed: 38776346
DOI: 10.1371/journal.pone.0297461 -
PeerJ 2024Aniseikonia is a binocular vision disorder that has been associated with asthenopic symptoms. However, asthenopia has been evaluated with subjective tests that make...
BACKGROUND
Aniseikonia is a binocular vision disorder that has been associated with asthenopic symptoms. However, asthenopia has been evaluated with subjective tests that make difficult to determine the level of aniseikonia. This study aims to objectively evaluate the impact of induced aniseikonia at different levels on visual fatigue by measuring the orbicularis oculi muscle activity in the dominant and non-dominant eyes while performing a reading task.
METHODS
Twenty-four collegiate students (24.00 ± 3.86 years) participated in this study. Participants read a passage for 7 minutes under four degrees of aniseikonia (0%, 3%, 5% and 10%) at 50 cm. Orbicularis oculi muscle activity of the dominant and non-dominant eye was recorded by surface electromyography. In addition, visual discomfort was assessed after each task by completing a questionnaire.
RESULTS
Orbicularis oculi muscle activity increased under induced aniseikonia (, greater values for the 10% condition in comparison to 0%, and 3% conditions ( = 0.034 and = 0.023, respectively)). No statistically significant differences were observed in orbicularis oculi muscle activity for the time on task and between the dominant and non-dominant eyes. Additionally, higher levels of subjective visual discomfort were observed for lower degrees of induced aniseikonia.
CONCLUSION
Induced aniseikonia increases visual fatigue at high aniseikonia degrees as measured by the orbicularis oculi muscle activity, and at low degrees as measured with subjective questionnaires. These findings may be of relevance to better understand the visual symptomatology of aniseikonia.
Topics: Humans; Male; Female; Young Adult; Electromyography; Reading; Adult; Aniseikonia; Oculomotor Muscles; Asthenopia; Computers; Facial Muscles
PubMed: 38770099
DOI: 10.7717/peerj.17293 -
International Journal of Ophthalmology 2024To compare and analyse the diagnostic efficacy of the College of Optometrists Vision Development Quality of Life Questionnaire (COVD-QOL) and the Convergence...
Diagnostic values of questionnaires of Convergence Insufficiency Symptom Survey and College of Optometrists Vision Development Quality of Life in the screening of convergence insufficiency.
AIM
To compare and analyse the diagnostic efficacy of the College of Optometrists Vision Development Quality of Life Questionnaire (COVD-QOL) and the Convergence Insufficiency Symptom Survey (CISS) in detecting convergence insufficiency and to compare their diagnostic value in clinical applications.
METHODS
Using the diagnostic test method, 62 adult patients with convergence insufficiency (age: 24.74±3.75y) and 62 normal participants (age: 23.61±3.13y) who visited the Optometry Clinic of West China Hospital of Sichuan University from April 2021 to January 2023 were included. All subjects completed the CISS and COVD-QOL. Statistical analysis of the sensitivity and specificity of the CISS and COVD-QOL and comparison and joint experimental analysis of their diagnostic efficacy were performed.
RESULTS
The sensitivity of the CISS and COVD-QOL for convergence insufficiency was 64.5% and 71.0%, respectively, while the specificity was 96.8% and 67.7%, respectively. Compared to the CISS alone, the combination of the CISS and COVD-QOL demonstrated lower sensitivity and specificity. The areas under the receiver operating characteristic curve of CISS, COVD-QOL and CISS combined with COVD-QOL were 0.806, 0.694 and 0.782, respectively.
CONCLUSION
Considering the low sensitivity of the CISS and the low specificity of the COVD-QOL, it is recommended to supplement these questionnaires with other screening tests for the detection of convergence insufficiency.
PubMed: 38766349
DOI: 10.18240/ijo.2024.05.15 -
Oman Journal of Ophthalmology 2024This study aims to evaluate the relationship between somatic sensations, impaired vision, and cognitive performance using the factor structure convergence insufficiency...
Is there a relationship between somatic sensations, impaired vision, and cognitive performance using the factor structure of the convergence insufficiency symptoms survey questionnaire?
AIMS
This study aims to evaluate the relationship between somatic sensations, impaired vision, and cognitive performance using the factor structure convergence insufficiency symptoms survey questionnaire in university undergraduate and post-graduate students.
SETTINGS AND DESIGN
Centre-based and questionnaire-based.
SUBJECTS AND METHODS
Subjects were recruited from a university. First, an e-Survey was conducted with the help of Google form and distributed through WhatsApp and Gmail to carry out the survey. The age group of participants was ranged from 18 to 30 years. A total number of 561 responses was received during the data collection period. As per the exclusion criteria, 230 responses were excluded from the study. Out of 331 students, 154 were male while 177 were female. Out of 331 participants, 213 were undergraduates and 118 were postgraduate's students.
RESULTS
A total of 331 participants took part in the study. The minimum age was 18 years and the maximum age was 30 years. The mean age of the participants was 23.40 ± 2.42. Among all students, 23.81% had somatic sensations followed by 10.49% had impaired vision, and 16.31% had a poor cognitive function. The correlation between somatic sensations-impaired visions was a moderate positive correlation and a strong positive correlation between somatic sensations-cognitive performance and impaired vision-cognitive performance.
CONCLUSIONS
A significant relationship between somatic sensations, impaired vision, and cognitive performance was found in the study. The students had more somatic sensations than impaired vision and cognitive performance.
PubMed: 38524337
DOI: 10.4103/ojo.ojo_67_22 -
Middle East African Journal of... 2023The digital eye strain (DES) is of public health magnitude in students undertaking online studies during the COVID-19 pandemic. The DES prevention strategies will be...
PURPOSE
The digital eye strain (DES) is of public health magnitude in students undertaking online studies during the COVID-19 pandemic. The DES prevention strategies will be effective if all stakeholders, including parents, work together. We present an awareness level of preventive measures among parents of students studying online for 1 year.
METHODS
This web-based survey was held in December 2021. Parents of Saudi students in the Qassim region responded to 15 questions about the preventive measures for DES. The responses were summed up and graded into very poor, poor, good, and excellent. The level of awareness was associated with determinants.
RESULTS
The awareness was excellent in 566 of 704 (80.4%) (95% confidence interval 77.5-83.3) participants. Parents had poor awareness about the importance of the 20-20-20 rule (43.8%), frequent blinking (56.7%), using digital devices beyond studies (57.4%), using eye lubricants while using a digital device (56%), and using devices at night in lying position (69.6%). Excellent awareness was significantly associated with primary-level students ( = 0.0004), those having ophthalmic consultation in the past ( = 0.02), and students with DES ( = 0.0006). Parents with excellent awareness were not satisfied with online studies of their wards ( = 0.001).
CONCLUSION
Awareness of parents about preventive measures to address DES in students is relatively high. However, health promotion is recommended, especially focusing on the weak areas to improve DES and its impact on students.
Topics: Humans; Pandemics; Saudi Arabia; COVID-19; Parents; Students
PubMed: 38435105
DOI: 10.4103/meajo.meajo_72_22 -
International Journal of Ophthalmology 2024To investigate the frequency and associated factors of accommodation and non-strabismic binocular vision dysfunction among medical university students.
AIM
To investigate the frequency and associated factors of accommodation and non-strabismic binocular vision dysfunction among medical university students.
METHODS
Totally 158 student volunteers underwent routine vision examination in the optometry clinic of Guangxi Medical University. Their data were used to identify the different types of accommodation and non-strabismic binocular vision dysfunction and to determine their frequency. Correlation analysis and logistic regression were used to examine the factors associated with these abnormalities.
RESULTS
The results showed that 36.71% of the subjects had accommodation and non-strabismic binocular vision issues, with 8.86% being attributed to accommodation dysfunction and 27.85% to binocular abnormalities. Convergence insufficiency (CI) was the most common abnormality, accounting for 13.29%. Those with these abnormalities experienced higher levels of eyestrain (=69.518, <0.001). The linear correlations were observed between the difference of binocular spherical equivalent (SE) and the index of horizontal esotropia at a distance (=0.231, =0.004) and the asthenopia survey scale (ASS) score (=0.346, <0.001). Furthermore, the right eye's SE was inversely correlated with the convergence of positive and negative fusion images at close range (=-0.321, <0.001), the convergence of negative fusion images at close range (=-0.294, <0.001), the vergence facility (VF; =-0.234, =0.003), and the set of negative fusion images at far range (=-0.237, =0.003). Logistic regression analysis indicated that gender, age, and the difference in right and binocular SE did not influence the emergence of these abnormalities.
CONCLUSION
Binocular vision abnormalities are more prevalent than accommodation dysfunction, with CI being the most frequent type. Greater binocular refractive disparity leads to more severe eyestrain symptoms.
PubMed: 38371255
DOI: 10.18240/ijo.2024.02.22 -
Revista Brasileira de Medicina Do... 2023Several studies have shown that eye and vision problems are among the most significant issues reported by individuals who use computers at work.
INTRODUCTION
Several studies have shown that eye and vision problems are among the most significant issues reported by individuals who use computers at work.
OBJECTIVES
To investigate individual and occupational environmental factors associated with visual function among workers who perform computer-based administrative tasks.
METHODS
This is a cross-sectional study conducted in 2014-2015 with 303 workers of a public hospital in the city of São Paulo, Brazil. The participants answered a structured questionnaire, including the 25-Item National Eye Institute Visual Function Questionnaire. Statistical analyses used descriptive analysis, tests of association and multiple linear regression analysis.
RESULTS
Most participants were female (61.1%); the mean age was 46.0 (standard deviation [SD]) ± 12.5, and approximately 91.7% of them reported wearing corrective lenses. Regarding visual function, the mean score at the 25-Item National Eye Institute Visual Function Questionnaire was 78.0, SD ±7.1. A regression analysis showed that visual function declined with age (ß -0.218; 95%CI -0.276--0.16l) and effort at work (ß -0.656; 95%CI -0.928--0.383).
CONCLUSIONS
The mean quality of visual health in the studied group was good. The younger the age and the lower the effort at work, the better the visual function. Our results point to the relevance of establishing periodical and preventive health actions, including eye health assessments.
PubMed: 38313084
DOI: 10.47626/1679-4435-2022-861 -
Frontiers in Public Health 2023The role of ophthalmologists is defined by tasks requiring visual effort, emphasizing the importance of examining their condition within the realm of occupational visual...
INTRODUCTION
The role of ophthalmologists is defined by tasks requiring visual effort, emphasizing the importance of examining their condition within the realm of occupational visual health. Our goal was to explore the occurrence of asthenopia among Chinese ophthalmologists and identify contributing factors through the use of a reliable and validated survey instrument.
METHODS
A national cross-sectional online survey was carried out in June 2017, involving 6,220 practicing ophthalmologists in China. Utilizing an 11-item Asthenopia Survey Questionnaire with established reliability and validity. Prevalence rates of asthenopia among subgroups categorized by age, gender, hospital classification, physician level, daily near vision activity duration, sleep duration, sleep quality, presbyopia status, and history of eye surgery were determined using the independent -test, chi-square test and bonferroni test. Multiple logistic regression analysis was employed to pinpoint independent factors linked to asthenopia.
RESULTS
Out of the 5,009 ophthalmologists who completed the survey, a 40.7% prevalence of asthenopia was identified. Multivariate analysis revealed that good sleep quality (OR: 0.24, 95%CI: 0.20-0.30), moderate sleep quality (OR: 0.47, 95%CI: 0.38-0.59), engaging in daily near vision activities for less than 7 h (OR: 0.76, 95%CI: 0.68-0.86), having daily sleep duration exceeding 7 h (OR: 0.87, 95%CI: 0.77-0.98), and working in tertiary hospitals (OR: 0.88, 95%CI: 0.78-0.99) were protective factors against asthenopia. Conversely, presbyopia was identified as a risk factor (OR: 1.33, 95%CI: 1.04-1.70). All calculated values were below 0.05. Age, gender, physician level, and eye surgery history were not related factors.
CONCLUSION
Asthenopia is prevalent among Chinese ophthalmologists, with employment in tertiary hospitals providing a protective effect and presbyopia is a risk factor. Preventive strategies include improving sleep quality, restricting daily near vision activity to under 7 h, and extending daily sleep duration to over 7 h. Further investigation is needed to explore the protective implications of working in tertiary hospitals.
Topics: Humans; Asthenopia; Presbyopia; Cross-Sectional Studies; Prevalence; Ophthalmologists; Reproducibility of Results; China
PubMed: 38222083
DOI: 10.3389/fpubh.2023.1290811 -
Indian Journal of Ophthalmology Jan 2024
Topics: Humans; Dry Eye Syndromes; Asthenopia; Computers; Surveys and Questionnaires
PubMed: 38131591
DOI: 10.4103/IJO.IJO_1809_23 -
Indian Journal of Ophthalmology Jan 2024This study aimed to determine the prevalence, risk factors, symptoms, and awareness of computer vision syndrome (CVS) among medical students during the coronavirus... (Observational Study)
Observational Study
PURPOSE
This study aimed to determine the prevalence, risk factors, symptoms, and awareness of computer vision syndrome (CVS) among medical students during the coronavirus disease 2019 (COVID-19) pandemic.
METHODS
A cross-sectional observational study was conducted among 283 undergraduate medical students at a tertiary healthcare center. An electronic survey was conducted to collect the data. Data were analyzed using Statistical Package for Social Sciences (SPSS version 23). The Chi-square test (Fisher's exact test when required) was used to study the significance of associations. A P value <0.05 was considered statistically significant.
RESULTS
A high prevalence of CVS was observed in which 92% reported at least one symptom while using a digital device, the most frequent being eye strain (49%). Among extraocular complaints, joint pain in the wrist and fingers was most frequent. Significant association (P < 0.05) of CVS was found with increased duration of digital device usage, refractive error, use of glasses or contact lens, preexisting dry eye disease, and use of topical eye drops. 37% of the participants were aware of the 20-20-20 rule, while only 11% followed it.
CONCLUSION
CVS is a common health concern among medical students. Hence, to increase the productivity of work, significant risk factors need to be addressed and awareness must be raised.
Topics: Humans; Pandemics; Students, Medical; Computer-Assisted Instruction; Cross-Sectional Studies; COVID-19; Asthenopia
PubMed: 38131578
DOI: 10.4103/IJO.IJO_492_23