Browsing by Author "Rana Mohamed Ali"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    The effect of computer displaying screens (LCD) on near Exophoria
    (2019-03-15) Nuha Mohamed Fath Elrahman; Rana Mohamed Ali
    Background: Globally approximately 60 million people suffer from Computer vision syndrome (CVS) resulting in reduced productivity at work and reduced quality of life of the computer worker1. Aim: The study was aimed to assess the effect of computer on near Exophoria and its association with CVS among bank workers using computer displaying screens (LCD monitors) for three continuous hours. Material and methods: This is a cross sectional study it was done in a period from August to September 2015 in Khartoum State; at Industrial development bank, Bright Blue Nile Bank, Al-Neelain Bank and Commercial Farmer Bank. Demographic data were taken (Gender, Age and complain). Outer eye was examined by pen torch and magnifier, vision tested by Snellen’s visual test chart (E chart). Streak retinoscope was used to assesses the refractive state of the eye, cover-uncover test to measure the direction of eye movement by using opaque occlude and fixation target, exophoria measured by Maddox Wing. The computer screen to face distance was adjusted 40 cm. All examinations were taken at morning (8:30 o'clock) before starting work and after 3 continuous hours of work. Results: A total of (62) subjects of equal number of male and female were including in this study, their age ranged between (20-37) years with mean of 28.70 ± 4.28 years. After 3 hours continuous work the study revealed that the subjects had one or more of CVS symptoms. The most frequent complain one was dry eyes 29% followed by visual discomfort 25.8%, headache 19.4%, ocular pain 16.1%, and the least frequent one was ocular fatigue 9.7%. Before starting work 46.8% of subjects had exophoria more than 4 Δ then become 69.4% after continues 3 working hours. The degree of phoria ranged from (2 Δ-14 Δ) with mean of 3.58±3.74 before starting work and (2 Δ -16 Δ) with mean of 4.54±3.53 after 3 hours of continues work. Paired sample t-test showed there is no significant difference between phoria before and after work p=(0.107). Conclusion: From the results of our study, it can be concluded that the continuous use of computers with LCD monitors increases the degree of near exophoria which leads to visual and ocular symptoms. Key words: Near exphoria, LCD monitor. المستخلص: الهدف:عالميا ما يقرب 60 مليون شخص يعانون من متلازمة تاثير الكمبيوتر علي النظر ما قلل من انتاجيتهم ونوعية حياتهم حياتهم0 تهدف هذه الدراسه الى معرفه تاثير استخدام الكمبيوتر(شاشات LCD) لثلاث ساعات على الحول الخفي الوحشي القريب. المواد والطرق: هذه دراسة وصفية مقطعية، في الفترة من اغسطس الى سبتمبر 2015م بولاية الخرطوم، اجريت في بنك النيل الازرق المشرق، و بنك التنمية الصناعيه، بنك النيلين، وبنك المزارع التجاري . تم تقييم هذه الدراسه باجراء القياسات موظفي البنوك وذلك لقياس الحول الخفي قبل وبعد الاجهاد، تم اخذ ديموغرافية البيانات (النوع والعمر)، فحص العين الخارجي بالبطارية (Torch)، تم فحص حدة الرؤية بواسطة لوحة سنيلين والحالة الإنكسارية للعينين بجهاز قياس الشبكية (Retinoscope)، وتم قياس اتجاه ومقدار حركة العين باستخدام كشف الغطاء والتغطية (cover test)، والحول الخارجي القريب بواسطة (Maddox Wing) قبل البدء في العمل صباحا وبعد 3 ساعات متواصلة من العمل. النتائج: مجموع (62) فرد شملوا الدراسة مع عدد متساو من ذكور والاناث، تراوحت اعمارهم ما بين (20-35) بمتوسط 28.70 ±4.28 سنة. 29% لديهم جفاف العين و 25.8% عدم الراحة، 19.4% لديهم صداع، 16.1% الم في العين و9.7% اجهاد. 46.8% من الافراد كان لديهم حول خفي (≥4▲) قبل بدء العمل ثم اصبحو 69.4% بعد العمل المتواصل لثلاث ساعات. تراوحت درجات الحلول الخفي من (0-14 ▲) بمتوسط 3.58 ± 3.74 قبل بدء العمل، و(0-16 ▲) بتموسط 4.54 ± 3.53 بعد العمل المتواصل، لا توجد فروقات ذات دلالات احصائية بالقيمة الاحتمالية 0.107 . الخلاصة: العمل لفترات طويلة على الحاسب الالي يزيد درجة الحول الخفي الوحشي القريب عند ، ويؤدي الي شكوي لدي العاملين. الكلمات المفتاحية: الحول الخفي الوحشي القريب، الحاسش الالي.
  • Thumbnail Image
    Item
    The Effect of Computer Displaying Screens on Near Exophoria
    (جامعة النيلين - كلية الدراسات العليا, 2017-01-16) Rana Mohamed Ali; Nuha Mohammed Fath Alrahman
    The present study aimed to determine the effect of visual stress "computer displaying LCD screens" on near exophoria. The study was conducted done during August and September 2015 at Khartoum State, bank employees. Demographic data was taken, outer eye was examined by pen torch, vision tested by Snellen’s chart, retinoscope for measure refractive state,cover test to measure the direction and degree of eye movement, and exophoria measured by Maddox Wing at morning before starting work and afier 3 continuous hours of w0rk.Data analysis was done using SPSS (16) program Statistical Package for Social Sciences. Results:A total of 62 subjects of equal number of male and female were including in this study, mean of age 28.70 =k 4.28years. All subjects were symptom free and exophoric with mean of 3.58:l:3.74 before starting work, and 100% were symptomatic 29% feelingdry eyes, 25.8% discomfort, 19.4% headache, 16.1% ocular pain, and 9.7% fatigue and exophoric with amean of 4.54i3.53 afier continuous 3 hours of working. Paired sample t-test showed there is no significant difference between exophoria before and afier work p=(0. 107). Conclusion: Continuous computer work increase near deviation, which result in headache and ocular symptoms.