scholarly journals A Unified Rule for Binocular Contrast Summation Applies to Normal Vision and Common Eye Diseases

2021 ◽  
Vol 62 (13) ◽  
pp. 6
Author(s):  
Ying-Zi Xiong ◽  
Rong Liu ◽  
MiYoung Kwon ◽  
Ava K. Bittner ◽  
Cynthia Owsley ◽  
...  
Keyword(s):  

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Usman Abubakar Mijinyawa ◽  
Lawan Abdu ◽  
Musbahu Sani Kurawa ◽  
Zayyad Farouq

Ocular screening can identify both nonblinding and potentially blinding conditions. Asymptomatic eye conditions could be detected early and be refer for further reevaluation if identified during screening. Programmed Data generated during CME in Kano were collated and analyzed. Visual acuity was done, and near vision was tested with N-chart. All the participants that needed the screening had slit lamp examination, fundoscopy, and refraction. A total number of 92 participants were examined. Age ranges from 20 to 70 years with mean age of 45±2SD, and male to female ratio of (M:F = 1:0.2). Emmetropia was seen in 34.8%, while presbyopia was seen in 23.9% of cases. Findings were corneal opacity, cataract, and allergic conjunctivitis. Vertical cup disc ratio of ≥0.5 was seen in 12.0% and 9.8% of cases in right and left eye respectively, while 1.1% of the eyes had macula hole. Refractive error for distance, presbyopia and some anterior and posterior segment findings were identified. Majority had normal vision in both eyes with visual acuity of 6/6 to 6/18.



2012 ◽  
Vol 3 (5) ◽  
pp. 439-442
Author(s):  
* Dr. RajaKumar Pasam ◽  
◽  
Dr. UdayKumar Dr. UdayKumar




Author(s):  
Abdulrahman M. Ibrahem ◽  
Salah Q. Mahmood ◽  
Muhammed Babakir-Mina ◽  
Salar Ibrahim Ali ◽  
Bakhtyar Kamal Talabany

Knowledge and practice of public, especially patients about eye diseases are important to reduce magnitude of human blindness. Vision and sight are very essential because they allow us to connect to each other’s. In accordance to the recently published data; the estimation of 253 million people lives with vision impairment, 36 million are blind and 217 million suffer from moderate to severe vision impairment. A descriptive cross-sectional study was conducted at Shahid Dr. Aso Hospital in Sulaimani city-Iraq, from April to August 2017 by face-to-face interview through close ended questionnaire for data collecting. All data were analyzed by Statistical Package for Social Sciences version 22.0 software. P-value of < 0.05 was considered as a statistically significant. A total of 430 patients were randomly chosen to participate in the study. They were 254 (59.1%) males and 176 (40.9%) females. 76.7% of respondents was worrying about vision loss, 0.7% was worrying about hair loss. Of the participants, 32.8% was with a good knowledge level and 40.5% was with a poor knowledge level, as well as 3.1% was in a good practice and 58.8% was in a poor practice level. Female knowledge mean score was 9.53±4.96 and male knowledge mean score was 8.42±5.45, the practice mean score of males was 4.33±1.96 and mean practice score of females was 4.13±1.93. The study data indicate the worrying of participates about vision loss is in the highest proportion and the awareness and practice of patients about eye diseases is unsatisfactory. Health education campaigns are needed to improve personal awareness about vision related problems and for better eye health.



2018 ◽  
Author(s):  
V.G. Kopaeva ◽  
Keyword(s):  


GYNECOLOGY ◽  
2016 ◽  
Vol 18 (6) ◽  
Author(s):  
S.P. Sinchikhin


Author(s):  
Юлия Владимировна Татаркова ◽  
Татьяна Николаевна Петрова ◽  
Олег Валериевич Судаков ◽  
Александр Юрьевич Гончаров ◽  
Ольга Николаевна Крюкова

В настоящей статье представлен обзор основных решений, доступных сегодня для формирования как краткосрочных, так и долгосрочных проекций заболеваемости болезней глаза и его придаточного аппарата в студенческой среде. С другой стороны, существует ряд проблем, связанных с многообразием факторов, влияющих на заболеваемость, статистической необоснованностью и противоречивостью имеющихся результатов анализа данных. Представлены результаты математического моделирования зависимости показателя заболеваемости от наиболее влиятельных факторов образовательной и социальной среды. Перечислены важнейшие направления разработки математических моделей распространения заболеваемости. С помощью разработанного программного комплекса проведена серия вычислительных экспериментов по оценке и прогнозированию заболеваемости обучающихся в вузах разного профиля. Показана эффективность применения методики многовариантного моделирования и прогнозирования, указаны их ограничения и возможности практического применения. По расположению обобщенной области благоприятного прогноза в факторном пространстве можно определить время воздействия неблагоприятных для зрения факторов, которое должно составлять не более 10 ... 11 часов в сутки, количество профилактических мероприятий должно составлять не менее 3 ... 4. При этом риск развития миопии составит не более 0,4, вероятность усталости глаз за компьютером составит не более 0,4, вероятность дискомфорта глаз на занятиях составит не более 0,15. Исходя из характера прогноза, определяется длительность диспансерного наблюдения, а также потребность профилактических мероприятий по устранению или ослаблению действия неблагоприятно влияющих социально-гигиенических и медико-биологических факторов конкретного больного. Использование прогностической матрицы в практическом здравоохранении позволяет существенно улучшить работу по профилактике офтальмологической заболеваемости и является одним из эффективных мероприятий диспансеризации студенческой молодежи, так как дает возможность выделить из числа обучающихся группу с высоким риском неблагоприятного исхода заболевания This article provides an overview of the main solutions available today for the formation of both short-term and long-term projections of the incidence of eye diseases and its adnexa in the student environment. On the other hand, there are a number of problems associated with a variety of factors affecting the incidence, statistical unreasonability and inconsistency of the available data analysis results. The results of mathematical modeling of the dependence of the incidence rate on the most influential factors of the educational and social environment are presented. The most important areas of developing mathematical models for the spread of morbidity are listed. With the help of the developed software package, a series of computational experiments was carried out to assess and predict the incidence of students in universities of various profiles. The effectiveness of the application of multivariate modeling and forecasting methods is shown, their limitations and practical application possibilities are indicated. By the location of the generalized region of favorable prognosis in the factor space, it is possible to determine the exposure time of factors unfavorable for vision, which should be no more than 10 ... 11 hours a day, the number of preventive measures should be at least 3 ... 4. At the same time, the risk of development myopia will be no more than 0.4, the probability of eye fatigue at the computer will be no more than 0.4, the likelihood of eye discomfort in the classroom will be no more than 0.15. Based on the nature of the forecast, the duration of the follow-up observation is determined, as well as the need for preventive measures to eliminate or weaken the action of adverse social, hygienic and biomedical factors of a particular patient. The use of the prognostic matrix in practical health care can significantly improve the work on the prevention of ophthalmic morbidity and is one of the effective medical examinations for students, since it makes it possible to distinguish among the students a group with a high risk of an unfavorable outcome of the disease



2013 ◽  
Vol 32 (8) ◽  
pp. 903-906
Author(s):  
Xiao-jiao DU ◽  
Yi-hui CHEN ◽  
Min-jie SHENG


2016 ◽  
Vol 16 (4) ◽  
pp. 197-200
Author(s):  
E.N. Eskina ◽  
◽  
E.A. Egorov ◽  
A.V. Belogurova ◽  
А.А. Gvetadze ◽  
...  


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