Cross-cultural validation into Portuguese of a questionnaire to assess computer vision syndrome in workers exposed to digital devices / Validação intercultural em português de um questionário para avaliar a síndrome visual do computador em trabalhadores expostos a dispositivos digitais

ABSTRACT Purpose: As digital devices are increasingly used at work, valid and reliable tools are needed to assess their effect on visual health. This study aimed to translate, cross-culturally adapt, and validate the Computer Vision Syndrome Questionnaire (CVS-Q©) into Portuguese. Methods: A 5-phase process was followed: direct translation, synthesis of translation, back-translation, consolidation by an expert committee, and pretest. To run the pretest, a cross-sectional pilot study was conducted with 26 participants who completed the prefinal Portuguese version of the CVS-Q© and were asked about difficulties, comprehensibility, and suggestions to improve the questionnaire. To evaluate the reliability and validity of the Portuguese version of the CVS-Q©, a cross-sectional validation study was performed in a different sample (280 workers). Results: In the pretest, 96.2% had no difficulty in completing it, and 84.0% valued it as clear and understandable. CVS-Q© in Portuguese (Questionário da Síndrome Visual do Computador, CVS-Q PT©) was then obtained. Validation revealed the scale's good internal consistency (Cronbach's alpha=0.793), good temporal stability (intraclass correlation coefficient=0.847; 95% CI 0.764-0.902, kappa=0.839), adequate sensitivity and specificity (78.5% and 70.7%, respectively), good discriminant capacity (area under the curve=0.832; 95% CI 0.784-0.879), and adequate convergent validity with the ocular surface disease index (Spearman correlation coefficient=0.728, p<0.001). The factor analysis provided a single factor accounting for 37.7% of the explained common variance. A worker who scored ≥7 points would have computer vision syndrome. Conclusions: CVS-Q PT© can be considered an intuitive and easy-to-understand tool with good psychometric properties to measure computer vision syndrome in Portuguese workers exposed to digital devices. This questionnaire will assist in making decisions on preventive measures, interventions, and treatment and comparing exposed populations in different Portuguese-speaking countries.

RESUMO Objetivos: À medida que a utilização de equipamentos digitais no emprego aumenta, a avaliação do seu efeito na saúde visual necessita de ferramentas válidas e robustas. Este estudo teve como objetivo traduzir, adaptar culturalmente e validar para português o Questionário da Síndrome Visual do Computador (CVS-Q©). Métodos: O procedimento foi realizado em 5 fases: tradução direta, síntese da tradução, tradução inversa, consolidação por um painel de especialistas, e pré-teste. Para fazer o pré-teste foi realizado um estudo piloto transversal aplicado a uma amostra de 26 participantes que completaram a versão pré-final da versão portuguesa do CVS-Q©, questionando por dificuldades, compreensão e sugestões de melhoria do questionário. Para avaliar a confiança e validade da versão portuguesa do CVS-Q© foi realizado um estudo transversal de validação em uma amostra diferente (280 funcionários). Resultados: No préteste, 96.2% dos participantes não apresentaram dificuldades no preenchimento do questionário, enquanto 84.0% indicaram que era claro e compreensível. Obteve-se, então, o CVS-Q© em português (Questionário da Síndrome Visual do Computador, CVS-Q PT©). A sua validação revelou uma boa consistência interna da sua escala (Cronbach's alpha=0.793), boa estabilidade tem poral (coeficiente de correlação interclasse=0.847; 95% CI 0.764-0.902, kappa=0.839), sensibilidades e especificidades adequadas (78.5% e 70.7%, respetivamente), boa capacidade de discriminação (área abaixo da curva=0.832; 95% CI 0.784-0.879), e uma adequada validade da convergência com o índice de doença da superfície ocular (ocular surface disease index - OSDI; coeficiente de correlação de Spearman=0.728, p<0.001). A análise fatorial revelou um único fator responsável por explicar a variância comum em 37.7%. Um funcionário com uma pontuação ≥7 pontos sofria de síndrome visual do computador. Conclusão: O CVS-Q PT© pode ser considerada uma ferramenta intuitiva, de fácil interpretação e com boas pro priedades psicométricas para avaliar a síndrome visual do computador em funcionários portugueses expostos a ecrãs digitais. Este questionário facilitará as decisões sobre medidas preventivas, intervenções e tratamento, e a comparação entre as populações expostas em diferentes países de língua portuguesa.

The 20/20/20 rule: Practicing pattern and associations with asthenopic symptoms

Purpose: The present work style and lifestyle have increased the digital device use. Therefore, an increase in digital eyestrain is to be expected. We undertook a survey during coronavirus disease 2019 (COVID?19) pandemic to investigate the practice of 20/20/20 rule and its association with digital device use and asthenopic symptoms. While this rule is commonly advised, little is known about its validity. Methods: An online survey form was disseminated through social media and emails. The questions for eye?related symptoms were similar to the convergence insufficiency symptom survey (CISS). Participants with age ?5 years were included, with parents completing the survey for children (?16 years). Results: A total of 432 participants (mean ± standard deviation [SD]: 26.06 ± 13.92 years) were enrolled, of which 125 responses were for children. The 20/20/20 rule was practiced only by 34% of the participants either regularly (n = 38) or occasionally (n = 109). Those who had complaints of burning sensation and headache tended to practice this rule. Among adult participants, more females (47%) practiced this rule when compared to males (23%). Also, adult females significantly (P = 0.04) had more symptoms score when compared to males. In children, no such gender difference was found. Conclusion: Only one?third of participants practice the 20/20/20 rule at least occasionally. More number of adult females being symptomatic and practicing in greater number could be due to higher prevalence of dry eye condition in females. While the symptom of burning sensation could be related to dry eye, that of headache could be related to refractive error or binocular vision dysfunctions

Combination of acupuncture and medication for dry eye complicated with computer vision syndrome: a randomized controlled trial / 中国针灸

OBJECTIVE@#To compare the clinical efficacy of acupuncture, Chinese medication and combination of acupuncture and medication in the treatment of dry eye complicated with computer vision syndrome (CVS).@*METHODS@#A total of 152 patients with dry eye complicated with CVS were randomly divided into an acupuncture-medication group (38 cases, 1 case was removed), an acupuncture group (38 cases, 1 case dropped off), a Chinese medication group (38 cases, 1 case was removed), and a western medication group (38 cases, 1 case dropped off). In the western medication group, sodium hyaluronate eye drop combined with esculin and digitalis glycosides eye drop were used. In the acupuncture group, acupuncture was applied at bilateral Taiyang (EX-HN 5)， Cuanzhu (BL 2), Fengchi (GB 20), Qimen (LR 14) , and Hegu (LI 4) etc., once a day. In the Chinese medication group, Yiqi Congming decoction formula ganule was given orally, one dose a day. In the acupuncture-medication group, acupuncture combined with Yiqi Congming decoction formula granule were used. All groups were treated for 14 d. The non-invasive first tear film break-up time (NIBUT f), non-invasive average tear film break-up time (NIBUT av), tear meniscus height (TMH), ocular surface disease index (OSDI) score, and CVS symptom score were compared between the patients of each group before and after treatment.@*RESULTS@#After treatment, the NIBUT f, NIBUT av, and TMH were increased compared with those before treatment in the patients of the 4 groups (P<0.01); the NIBUT f and NIBUT av in the acupuncture-medication group and the acupuncture group were higher than those in the Chinese medication group and the western medication group (P<0.05), and the TMH in the acupuncture-medication group and the Chinese medication group were higher than those in the acupuncture group and the western medication group (P<0.05). After treatment, the OSDI scores, the various scores and total scores of CVS (except for head symptom score in the western medication group) were decreased compared with those before treatment in the patients of the 4 groups (P<0.01). The OSDI score, total score, eye symptom score, and body symptom score of CVS in the acupuncture-medication group were lower than those in the acupuncture group, the Chinese medication group, and the western medication group (P<0.01, P<0.05), the head symptom score of the acupuncture-medication group was lower than that in the western medication group (P<0.05), and the CVS physical symptom scores and mental cognitive symptom scores of the acupuncture-medication group and the acupuncture group were lower than those in the Chinese medication group and the western medication group (P<0.05).@*CONCLUSION@#Acupuncture has advantages in improving NIBUT f, NIBUT av, and CVS physical symptoms and cognitive symptoms, and the Chinese medication has advantage in improving TMH. The combination of acupuncture and Chinese medication has better effects compared with monotherapy.

Status quo and influencing factors of computer vision syndrome among college freshmen in Tianjin / 中国学校卫生

Objective@#To investigate the current situation and associated factors of computer vision syndrome (CVS) among college freshmen in Tianjin during the COVID-19 epidemic, and to provide a reference for visual comfort of college students.@*Methods@#A total of 868 college freshmen from one university in Tianjin were administered with CVS qualitative analysis questionnaire, eye health status questionnaire and eye health examination during Oct to Dec 2021. Chi square test and multivariate Logistic regression were used for data analysis.@*Results@#The detection rate of CVS among the included students was 68.5% ( n =595) and was higher in females (72.2%) than in males (61.7%). The CVS detection rate in girls, students without myopia, >30 min sleep onset, >1 h mobile phone usage, and ≤8 h sleep duration (72.2%, 70.4%, 81.1%, 72.7%, 71.2%) were significantly higher than boys, students with low grade myopia, sleep onset required ≤30 min, use mobile phone for ≤1 h, and sleep duration >8 h(61.7%, 63.3 %, 67.4%, 65.9%, 61.1%) ( χ 2=10.08, 3.94, 5.89, 4.40, 7.94, P ＜0.05). Differences in CVS detection rates varied significantly by daily electronic device usage and academic stress students ( χ 2=22.03, 21.24, P ＜0.05). Multivariate Logistic regression analysis showed that daily use of electronic devices 4-6, 7-9, ≥10 h, sleep onset required >30 min, moderate to higher academic pressure were positively associated with CVS ( OR=1.95, 2.94, 2.30, 2.39, 3.51, 4.41, P ＜0.05), boys, low grade myopia, night sleep time >8 h were negatively associated with CVS ( OR=0.65, 0.70, 0.65, P ＜0.05).@*Conclusion@#The detection rate of CVS among freshmen in a university in Tianjing is high. Attention should be paid to the CVS situation of students with e learning, and general public should also be educated to reduce the time of unnecessary electronic product use and ensure night sleep to reduce the prevalence of CVS.

Predicción del Síndrome Informático Visual mediante la adicción a videojuegos en estudiantes chinos y españoles / Prediction of computer vision syndrome by video game addiction in Chinese and Spanish students

Introducción: El uso de los videojuegos, por la extensión que ha llegado a alcanzar durante la pandemia de la COVID-19, es una variable relevante de estudio, especialmente por sus interacciones con aspectos de la salud mental y visual. Objetivo: predecir el nivel de Síndrome informático visual a partir de un índice optimizado sobre el nivel de adicción en estudiantes universitarios de dos poblaciones: española y china. Material y Métodos: Se administró un cuestionario online con tres instrumentos validados: un cuestionario para evaluar el juego con videojuegos (CHCVI), un cuestionario para evaluar la adicción a los videojuegos (CERV) y un cuestionario para detectar el síndrome visual por ordenador (CSQ). Los tres cuestionarios se aplicaron a una muestra de 253 estudiantes, tanto de universidades chinas como españolas. Para establecer las predicciones, se construyeron índices robustos basados en el análisis factorial de los instrumentos administrados. Finalmente, se aplicó una regresión logística para obtener un modelo matemático útil para predecir el Síndrome Informático Visual. Resultados: Los resultados mostraron un mayor síndrome informático visual y apetito por los videojuegos en los estudiantes españoles, y menores puntuaciones de síndrome informático visual pero una mayor alteración de la vida cotidiana en los estudiantes chinos debido a este tipo de ocio. Además, se comprobó que los estudiantes de la muestra china tenían un menor riesgo de padecer el síndrome informático visual, y que tener mayores niveles de adicción implicaba 1,4 veces más probabilidades de sufrir dicho síndrome. Conclusiones: Los presentes hallazgos demuestran una relación hasta ahora inexplorada entre la adicción a los videojuegos y los síntomas visuales relacionados con el abuso del ocio electrónico.

Introduction: The use of video games, due to the extent that it has reached during the COVID-19 pandemic, is a relevant study variable especially because of its interactions with aspects of mental and visual health. Objective: to predict the occurrence of computer vision syndrome according to the level of addiction to video games in university undergraduates during a particular period of uncertainty due to health and mobility restrictions imposed by governments as a result of the COVID-19 pandemic. Material and Methods: To accomplish this objective, an online questionnaire was administered with three validated instruments: a questionnaire to assess playing video games (CHCVI), a questionnaire to evaluate video games addiction (CERV), and a questionnaire to detect computer vision syndrome (CSQ). The three questionnaires were applied to a sample of 253 students from both Chinese and Spanish universities. To establish the predictions, robust indexes were constructed based on the Factor Analysis of the instruments administered. Finally, logistic regression was applied to predict computer vision syndrome. Results: The results showed greater computer vision syndrome and appetite for video games in Spanish students, and lower computer vision syndrome scores but a greater alteration of daily life in chinese students due to this type of leisure. Moreover, it was found that students from the Chinese sample entailed a lower risk of suffering from computer vision syndrome, and that having higher levels of addiction involved 1,4 times more likelihood of suffering from such syndrome. Conclusions: The present findings demonstrate a previously unexplored relationship between video games addiction and visual symptoms related to screen exposure.

Digital eye strain and its associated factors in children during the COVID-19 pandemic

Purpose: This study was undertaken to identify the prevalence of symptoms related to the use of display devices and contributing factors in children engaged in distance learning during the COVID?19 pandemic. Methods: An online electronic survey form was prepared using Google Forms (Alphabet Co., Mountain View, CA) and sent to parents of children under the age of 18 years engaged in distance learning during the COVID?19 pandemic. The types of display devices children use, how often such devices are used, the symptoms of digital eye strain, and the severity and frequency of the symptoms were recorded, and the associations between the factors were analyzed. Results: A total of 692 participants were included. The mean age of the children was 9.72 ± 3.02 years. The most common display devices used were personal computers (n = 435, 61.7%) for online classes and smartphones (n = 400, 57.8%) for nonacademic purposes. The mean duration of display device use was 71.1 ± 36.02 min without a break and 7.02 ± 4.55 h per day. The most common reported symptom was headache (n = 361, 52.2%). Of the participants, 48.2% (n = 332) reported experiencing 3 or more symptoms. The multivariate analysis detected that being male (P = 0.005) and older age (P = 0.001) were independent risk factors for experiencing 3 or more symptoms. Conclusion: The increasing use of digital devices by children is exacerbating the problem of digital eye strain in children as a side effect of online learning. Public awareness should be improved

Association of screen time, quality of sleep and dry eye in college-going women of Northern India

Purpose: To evaluate the association of daily screen time and quality of sleep with the prevalence of dry eye among college?going women. Methods: This study was a cross?sectional, comparative questionnaire?based study of 547 college?going women in northern India. A 10?item Mini Sleep Questionnaire was used to check the quality of sleep, and the Standard Patient Evaluation of Eye Dryness (SPEED) scale was used to examine the prevalence of dry eye among college?going women. Results: Multinomial logistic regression showed a significant association between dry eye with daily screen time spent (P < 0.05) and the quality of sleep (P < 0.05) among college?going girls. Using Latent Class Analysis, two latent classes were selected based on the Bayesian Information Criteria. It was found that the majority population falls in class two and was having Severe Sleep?Wake difficulty. It was seen that the participants in class two belonged to the age bracket of 18–21 years, were from stream Humanities, education of father and mother equal to graduation, father working only, belonging to the nuclear family, having one sibling, hailing from the urban locality, spending more than 6 h daily on?screen, a majority of them using mobile phones, not using eye lubricants, and reported an increase in screen time during COVID?19. Conclusion: Dry eye and sleep quality are essential global health issues, and coupled with increased screen time, may pose a challenge in the present era. Preventive strategies need to be incorporated in school and college curriculums to promote physical, social, and psychological well?being and quality of life

Evaluation of the effects of single vision lenses with additional near-power on computer-induced asthenopia / Avaliação dos efeitos de lentes de visão simples com poder adicional de perto na astenopia induzida por computador

Abstract Objective: Compared to standard spectacle lenses, do +0.40 EyeZenTM lenses reduce symptoms of asthenopia induced by computer? Methods: A prospective clinical study was carried out with 39 volunteers who spent more than 4 hours a day using a computer (age, 27.31±4.24; male: female =13:26). Asthenopia and visual comfort were assessed using a questionnaires. All participants completed the asthenopia questionnaire with updated regular lenses (baseline). After 4 weeks of +0.40 Eyezen™ lenses wearing all subjects answered the asthenopia questionnaire and a second questionnaire to establish their level of satisfaction with these lenses. Statistical analysis was performed usind the Shapiro-Wilk test and Wilcoxon test, and p-values less than 0.05 were considered statistically significant. Results: Compared to standard spectacle lenses (baseline), +0.40 EyeZenTM lenses wearing reduced the total asthenopia score from17.44 ± 5.51 to 13.18 ± 10.22 (p < 0.001). Regarding the perception of the visual comfort levels with these lenses in the management of digital devices, more than 90% of subjects said they were entirely or delighted with their visual comfort.. Conclusions: Digital asthenopia induced by computer was significantly reduced by +0.40 EyeZen lenses wearing.

Resumo Objetivo: Comparadas com lentes oftálmicas regulares, as lentes de visão simples com +0,40D de poder adicicional de perto reduzem os sintomas de astenopia induzida por computador? Métodos: Foi realizado um estudo clínico prospectivo com 39 voluntários que passavam mais de 4h diárias utilizando computador (idade: 27,31±4,24 anos; masculino:feminino = 26:13). A astenopia e a percepção do conforto visual foram avaliadas com questionários. Todos os participantes respoderam ao questionário de astenopia com lentes regulares atualizadas (baseline). Após 4 semanas de uso das lentes +0.40 Eyezen™ os participantes responderam aos questionários de astenopia e de conforto visual. A análise estatística foi feita com os testes de Shapiro-Wilk e Wilcoxon. Valores de p<0,05 foram considerados estatísticamente significantes. Resultados: Comparadas com lentes oftálmicas regulares (baseline), o uso das lentes de visão simples com +0,40D de poder adicional de perto reduziu o escore total de astenopia de 17,44 ± 5,51 para 13,18± 10,22 (p< 0,001). Mais de 90% dos participantes se declaram completamente ou muito satisfeitos com o conforto visual percebido no uso de dispositivos digitais. Conclusão: A astenopia induzida por computadores foi significativamente reduzida pelo uso das lentes +0,40 Eyezen™ combinadas Crizal® Sapphire™.

Assessment of Computer Vision Syndrome in Software Professionals

Background: According to National Institute of Occupational Safety and Health, computer vision syndrome affects 90% people who spend more than 3 hours a day on the computer. It is a group of eye and vision related problems. It is a temporary condition resulting from focusing the eyes on a computer display for prolonged, uninterrupted period of time. Also different reactions of the eye and the brain to the characters on the screen cause strain. Hence, this study is planned to assess computer vision syndrome in software professionals. Objectives: To assess Computer Vision Syndrome by history and clinical examination. Material and Methods: An assessment survey was conducted in a convenient software company. A total number of 60 people in age group 28-40 years having minimum exposure of three years to computer everyday were recruited in the study. A questionnaire was developed to collect data about perceived symptoms on computer vision syndrome. Results: It was observed that 80% of subjects suffer from backache, wrist and shoulder pain. 72% subjects complained of eyestrain and 70% complained of dry and irritated eyes. 62% subjects complained of headache. More than 50% subjects gave history of watering and redness of eyes. Conclusion: Study shows that more than 50% subjects suffer from some or the other symptom of computer vision syndrome. Early detection and prevention of computer vision syndrome is necessary to prevent future complications and better health of software professionals.

Curse of the technology-computer related musculoskeletal disorders and vision syndrome: a study

Background: Computer Related Musculoskeletal disorders and Vision Syndrome (CRMSKVS) is defined as symptoms due to prolonged use of Visual Display Terminal (VDT).Methods: A cross-sectional observational study was done among office-workers working on computer terminal. A self-reported questionnaire was distributed and Musculoskeletal (MSK) and visual symptoms in the preceding 12 months (01 October 2017 to 30 September 2018) were taken as dependent variable. Multivariate analysis was done to identify the determinants of CRMSKVS.Results: Responses from 1193 subjects were included in the study. CRMSKVS was present in 489 cases (40.98%; males - 37.5%, females - 58.29%).  The main MSK symptoms were pain/stiffness in neck (40.98%), shoulder (38.99%), lower back (35.6%) and elbow/wrist/hand/fingers (23.1%). The ocular symptoms were excessive watering (39.6%), pain (24.99), irritation (18.6%), burning/itching sensation (29.8%), redness (40.7%), blurring of vision (13.2%) and headache (40.9%). Female gender (OR-1.498(1.262-1.778)), long duration of working hours (OR-2.77(2.399-3.214)), poor break duration (OR-2.59(2.172-3.089)), excessive smart phone use (OR-2.071(1.834-2.338)), poor posture (OR-3.883(3.282-4.592)), inappropriate distance of computer screen (OR-2.173(1.829-2.582)), low height of screen (OR-1.936(1.527-2.454)), distance of keyboard (OR-3.161(2.528-3.953)) and distance of mouse (OR-5.785(3.932-8.512)) were identified as significant determinants of CRMSKVS.Conclusions: CRMSKVS is an emerging pandemic which needs urgent attention by medical and administrative authorities. The device factors, personal factors, environmental and ergonomic factors are the modifiable risk factors for CRMSKVS.

A cross sectional overview of digital eye strain: a growing health concern in this digital age in central India (Madhya Pradesh)

Background: The physical discomfort and collection of symptoms after digital screen use for longer than two hours at a time is referred by the Vision Council as digital eye strain (DES). Common symptoms of DES are eyestrain, headache, blurred vision, dry eyes and pain in neck and shoulders. This study aims to know about the prevalence; factors associated with and awareness about preventive measures for DES among college students.Methods: A cross-sectional study was conducted for 2 months in 2017 among randomly selected 200 college students of 20 to 30 years of age in Indore city of Madhya Pradesh using a pre-designed semi-structured questionnaire.Results: Mean age of participants was 22.5 years; of which 58% were females. Of the respondents, 89.5% (179 students) reported experiencing DES. Average distance from digital screen, brightness level of digital device, use of digital device before going to sleep and awareness about appropriate distance of digital screen from eyes had statistically significant association with having digital eye strain. 98% of respondents were unaware of the term DES while >60% did not have knowledge about the harmful blue light emitted by digital devices, protective use of digital screen filters, appropriate distance of viewing digital screen and the 20-20-20 rule of taking breaks in between screen time.Conclusions: Since digital device use is a necessary evil; better ergonomic practices to avoid DES should be adopted. Opportunistic health promotion and patient education undertaken by ophthalmologists on an OPD basis is one solution.

A cross sectional study to assess the prevalence and associated factors of computer vision syndrome among engineering students of Hyderabad, Telangana

Background: Computer vision syndrome is a complex of eye and vision problems related to near work which are experienced due to prolonged computer use. Computers demand near work, for longer duration which increases discomfort of eye and prolonged exposure to the discomfort leads to a cascade of symptoms that can be referred as computer vision syndrome. The aims and objectives of the study were to determine the prevalence of computer vision syndrome among engineering students of Hyderabad, Telangana and to determine the factors related to computer vision syndrome among study population.Methods: A cross sectional study was carried out from March to June 2017 among students of an engineering college in Hyderabad, Telangana. A convenient sample of 300 students was taken and a predesigned, pre tested questionnaire was used to obtain information.Results: Majority of study population were males (56.3%). Around 75.1% of study population were using all the electronic gadgets like computers, laptops and smartphones. The prevalence of computer vision syndrome was found to be 60.3%. Around 46.7% of study population viewed the screen from a distance of 22-40 centimeters.Conclusions: As students pursuing engineering stream are the future IT and Computer software engineers, preventive strategies adopted by them will significantly decrease the burden of computer vision syndrome and improve productivity. In this study a significant proportion of the engineering students were found to be having vision problems, which emphasizes the need to adopt preventive measures to avoid computer vision syndrome

Shatavari Ghrita Aschyotana In Computer Vision Syndrome A Pilot Study

Computer Vision Syndrome (CVS) is one among major lifestyle hazard of superfast and advanced 21st century. According to contemporary science, only palliative measures in the form of Tear supplements are available which has to be used lifelong by the patients. So considering the grave nature of the disease, higher incidence and lack of effective measure it has been selected for the present study. As CVS is a technological occupational hazard there are no direct references available in our classics. Though few features mentioned in Netra rogas provide indirect references through which one can understand doctrines behind its treatment. Symptoms of CVS mainly indicate vitiation of Vata and Pitta dosha. So there is a need of finding effective measures which can fulfil the criteria such as Vatapittahara, Snehana, Chakshusya and Rasayana.Considering above facts Aschyotana with Shatavari ghrita is expected to yield better results. In the present study, 10 patients were randomly selected and treated with Shatavari Ghrita Aschyotana, 10 drops i.e., Snehana type, twice daily for a period of 30 days. Follow up study was undertaken for every 15 days upto 3 months. There is significant improvement in condition especially related to subjective symptoms like eye strain, dryness, diplopia and redness. The collected data was statistically analysed and at the end of present study overall response was moderate i.e., 65.96%. Hence we can infer that Ayurvedic siddhantas are eternal and can be applied in understanding any disease. Shatavari Ghrita Aschyotana proved effective in management of Computer Vision Syndrome. So this simple, cost effective formulation can be used in treating CVS.

Síndrome de visión de la computadora en trabajadores de dos bancos metropolitanos de un área de salud / Computer vision syndrome observed in employees from two Metropolitan Banks in a health area

El ordenador, si no se utiliza adecuadamente, produce trastornos en la salud. La causa de estas alteraciones está relacionada con factores ergonómicos visuales del entorno de trabajo y la exacerbación de problemas visuales ya existentes. Objetivo: describir características clínicas del síndrome de visión de la computadora en trabajadores de dos bancos metropolitanos de un área de salud. Métodos: se realizó un estudio descriptivo transversal. La muestra la conformaron 40 trabajadores que refirieron sintomatología asociada al uso del ordenador y que cumplieron los criterios de inclusión. Se estudiaron las variables: edad, sexo, síntomas, signos biomicroscópicos, afecciones oculares asociadas y tipo de defecto refractivo. Resultados: el 82,5 por ciento de los pacientes tenían más de 30 años, con edad media de 41,7 años. Por cada 12,3 mujeres diagnosticadas con síndrome de visión de la computadora se diagnosticó un hombre. Ojo rojo intermitente y visión borrosa resultaron los síntomas más frecuente y la inyección conjuntival el signo. Las afecciones oculares más frecuentes fueron las ametropías con 87,5 por ciento y ojo seco con 57,5 por ciento. Dentro de las ametropías predominó el astigmatismo con 43 por ciento de casos. Conclusiones: el síndrome de visión de la computadora es un problema de salud real en la actualidad. Las personas que pasan muchas horas frente al ordenador generalmente presentan antecedentes de afecciones oculares como ametropías y ojo seco, por lo que deben asistir al oftalmólogo(AU)

The computer, if not properly used, may cause health disorders. The cause is already related with visual ergonomic factors of the work environment and the exacerbation of already existing visual problems. Objective: to describe the clinical characteristics of the computer vision syndrome in employees from two metropolitan banks in a health area. Method: a cross-sectional descriptive study was carried out. The sample made up of 40 workers who had symptoms associated to the use of computer and met the inclusion criteria. The study variables were age, sex, symptoms, biomicroscopy signs, other eye pathologies and type of refractive defect. Results: in the study group, 82,5 percent of the patients were older than 30 years old, being the mean age of 41,7 years. One man per 12,3 women was diagnosed with the computer vision syndrome. Intermittent red eye and blurred vision were the most frequent symptoms and the conjunctival injection was the sign. The most frequent ocular pathologies turned to be the ametropia with 87,5 percent and dry eye with 57,5 percent of cases. Astigmatism prevailed in 43 percent of the group. Conclusions: the computer vision syndrome is a real health problem at the present time people that spend many hours working with computer generally show eye alterations as ametropia and dry eye, and they should go to the ophthalmologist(AU)

Síndrome de visión de la computadora en estudiantes preuniversitarios / Computer vision syndrome observed in high school students

OBJETIVO: Describir el comportamiento clínico-epidemiológico del síndrome de visión de la computadora en estudiantes de décimo grado del preuniversitario Rafael María de Mendive desde septiembre del 2007 a junio del 2008. MÉTODOS: Se realizó un estudio descriptivo y transversal. El universo estuvo constituido por todos los alumnos del grado con manifestaciones clínicas relacionadas con el uso de la computadora (183 pacientes) y la muestra fue de 45, tomada mediante un muestreo aleatorio simple (1 de cada 4). Se tuvo en cuenta las siguientes variables: grupos de edad, sexo, manifestaciones clínicas, uso de cristales, tiempo de trabajo con la computadora, intervalo de reposo visual por hora de trabajo y evolución visual después de 3 meses del tratamiento. RESULTADOS: Predominó el sexo femenino (68,9 por ciento) con una edad media de 16,5 y los síntomas relevantes fueron la cefalea (82,2 por ciento) y fatiga ocular (75,5 por ciento). Los pacientes que usaban cristales y que el tiempo de trabajo con el ordenador fue superior a 4 horas originó los síntomas visuales antes mencionado; así como la miopía dentro de las ametropías (70 por ciento) y los descansos visuales de 15-20 minutos mejoraron el complejo de síntomas (51,2 por ciento). CONCLUSIONES: El síndrome de visión de la computadora constituye un problema de salud en este centro educacional, por lo que es importante realizar siempre un diagnóstico precoz debido a los efectos negativos que trae consigo en el adolescente, la escuela y la familia

OBJECTIVE: To characterize the clinical and epidemiological behavior of the computer vision syndrome in 10th grade students from Rafael María de Mendive high school in the period of September 2007 to June 2008 METHODS: A cross-sectional and descriptive study was conducted in which the universe of study was made up of all students of this educational level, who presented with clinical features derived from the computer use (183 patients).The final sample comprised 45 students selected on the basis of simple randomized sampling (1 out of 4). There were taken into consideration some variables: age groups, sex, clinical features, use of glasses, length of time spent in computer work, visual rest period per working hour and visual evolution after 3 months of treatment. RESULTS: Females predominated (68,9 percent) aged 16.5 years as average and the most relevant symptoms were headache (82,2 percent) and eyestrain (75.5 percent). Patients who wore glasses and worked over 4 hours at computer showed the above-mentioned visual symptoms; additionally, myopia within the ametropies (70 percent) and the visual resting lasting 15-20 minutes improved this set of symptoms (51,2 percent). CONCLUSIONS: Computer vision syndrome is a real health problem in our environment; therefore, it is important to making an early diagnosis of this entity due to its negative effects in teenagers, the school and the family

Understanding and preventing computer vision syndrome

The invention of computer and advancement in information technology has revolutionized and benefited the society but at the same time has caused symptoms related to its usage such as ocular sprain, irritation, redness, dryness, blurred vision and double vision. This cluster of symptoms is known as computer vision syndrome which is characterized by the visual symptoms which result from interaction with computer display or its environment. Three major mechanisms that lead to computer vision syndrome are extraocular mechanism, accommodative mechanism and ocular surface mechanism. The visual effects of the computer such as brightness, resolution, glare and quality all are known factors that contribute to computer vision syndrome. Prevention is the most important strategy in managing computer vision syndrome. Modification in the ergonomics of the working environment, patient education and proper eye care are crucial in managing computer vision syndrome.