The Experts below are selected from a list of 1767 Experts worldwide ranked by ideXlab platform
Dirani Mohamed - One of the best experts on this subject based on the ideXlab platform.
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Prevalence and Causes of Unilateral Vision Impairment and Unilateral Blindness in Australia
'American Medical Association (AMA)', 2018Co-Authors: Foreman Joshua, Xie Jing, Keel Stuart, Ang, Ghee S., Lee, Pei Ying, Bourne, Rupert R. A., Crowston, Jonathan G., Taylor, Hugh R., Dirani MohamedAbstract:Importance: This study determines the prevalence of Unilateral vision impairment (VI) and Unilateral Blindness to assist in policy formulation for eye health care services. Objective: To determine the prevalence and causes of Unilateral VI and Unilateral Blindness in Australia. Design, Setting, and Participants: This cross-sectional population-based survey was conducted from March 2015 to April 2016 at 30 randomly selected sites across all strata of geographic remoteness in Australia. A total of 1738 indigenous Australians 40 years or older and 3098 nonindigenous Australians 50 years or older were included. Main Outcomes and Measures: The prevalence and causes of Unilateral vision impairment and Blindness, defined as presenting visual acuity worse than 6/12 and 6/60, respectively, in the worse eye, and 6/12 or better in the better eye. Results: Of the 1738 indigenous Australians, mean (SD) age was 55.0 (10.0) years, and 1024 participants (58.9%) were female. Among the 3098 nonindigenous Australians, mean (SD) age was 66.6 (9.7) years, and 1661 participants (53.6%) were female. The weighted prevalence of Unilateral VI in indigenous Australians was 12.5% (95% CI, 11.0%-14.2%) and the prevalence of Unilateral Blindness was 2.4% (95% CI, 1.7%-3.3%), respectively. In nonindigenous Australians, the prevalence of Unilateral VI was 14.6% (95% CI, 13.1%-16.3%) and Unilateral Blindness was found in 1.4% (95% CI, 1.0%-1.8%). The age-adjusted and sex-adjusted prevalence of Unilateral vision loss was higher in indigenous Australians than nonindigenous Australians (VI: 18.7% vs 14.5%; P = .02; Blindness: 2.9% vs 1.3%; P = .02). Risk factors for Unilateral vision loss included older age (odds ratio [OR], 1.60 for each decade of age for indigenous Australians; 95% CI, 1.39-1.86; OR, 1.65 per decade for nonindigenous Australians; 95% CI, 1.38-1.96), very remote residence (OR, 1.65; 95% CI, 1.01-2.74) and self-reported diabetes (OR, 1.52; 95% CI, 1.12-2.07) for indigenous Australians, and having not undergone an eye examination in the past 2 years for nonindigenous Australians (OR, 1.54; 95% CI, 1.04-2.27). Uncorrected refractive error and cataract were leading causes of Unilateral VI in both populations (70%-75%). Corneal pathology (16.7%) and cataract (13.9%) were leading causes of Unilateral Blindness in indigenous Australians, while amblyopia (18.8%), trauma (16.7%), and age-related macular degeneration (10.4%) were major causes of Unilateral Blindness in nonindigenous Australians. Conclusions and Relevance: Unilateral vision loss is prevalent in indigenous and nonindigenous Australians; however, most cases are avoidable. As those with Unilateral vision loss caused by cataract and posterior segment diseases may be at great risk of progressing to bilateral Blindness, national Blindness prevention programs may benefit from prioritizing examination and treatment of those with Unilateral vision loss
Mohamed Dirani - One of the best experts on this subject based on the ideXlab platform.
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prevalence and causes of Unilateral vision impairment and Unilateral Blindness in australia the national eye health survey
JAMA Ophthalmology, 2018Co-Authors: Joshua Foreman, Jing Xie, Stuart Keel, Ghee Soon Ang, Pei Ying Lee, Rupert R A Bourne, Jonathan G Crowston, Hugh R Taylor, Mohamed DiraniAbstract:Importance This study determines the prevalence of Unilateral vision impairment (VI) and Unilateral Blindness to assist in policy formulation for eye health care services. Objective To determine the prevalence and causes of Unilateral VI and Unilateral Blindness in Australia. Design, Setting, and Participants This cross-sectional population-based survey was conducted from March 2015 to April 2016 at 30 randomly selected sites across all strata of geographic remoteness in Australia. A total of 1738 indigenous Australians 40 years or older and 3098 nonindigenous Australians 50 years or older were included. Main Outcomes and Measures The prevalence and causes of Unilateral vision impairment and Blindness, defined as presenting visual acuity worse than 6/12 and 6/60, respectively, in the worse eye, and 6/12 or better in the better eye. Results Of the 1738 indigenous Australians, mean (SD) age was 55.0 (10.0) years, and 1024 participants (58.9%) were female. Among the 3098 nonindigenous Australians, mean (SD) age was 66.6 (9.7) years, and 1661 participants (53.6%) were female. The weighted prevalence of Unilateral VI in indigenous Australians was 12.5% (95% CI, 11.0%-14.2%) and the prevalence of Unilateral Blindness was 2.4% (95% CI, 1.7%-3.3%), respectively. In nonindigenous Australians, the prevalence of Unilateral VI was 14.6% (95% CI, 13.1%-16.3%) and Unilateral Blindness was found in 1.4% (95% CI, 1.0%-1.8%). The age-adjusted and sex-adjusted prevalence of Unilateral vision loss was higher in indigenous Australians than nonindigenous Australians (VI: 18.7% vs 14.5%;P = .02; Blindness: 2.9% vs 1.3%;P = .02). Risk factors for Unilateral vision loss included older age (odds ratio [OR], 1.60 for each decade of age for indigenous Australians; 95% CI, 1.39-1.86; OR, 1.65 per decade for nonindigenous Australians; 95% CI, 1.38-1.96), very remote residence (OR, 1.65; 95% CI, 1.01-2.74) and self-reported diabetes (OR, 1.52; 95% CI, 1.12-2.07) for indigenous Australians, and having not undergone an eye examination in the past 2 years for nonindigenous Australians (OR, 1.54; 95% CI, 1.04-2.27). Uncorrected refractive error and cataract were leading causes of Unilateral VI in both populations (70%-75%). Corneal pathology (16.7%) and cataract (13.9%) were leading causes of Unilateral Blindness in indigenous Australians, while amblyopia (18.8%), trauma (16.7%), and age-related macular degeneration (10.4%) were major causes of Unilateral Blindness in nonindigenous Australians. Conclusions and Relevance Unilateral vision loss is prevalent in indigenous and nonindigenous Australians; however, most cases are avoidable. As those with Unilateral vision loss caused by cataract and posterior segment diseases may be at great risk of progressing to bilateral Blindness, national Blindness prevention programs may benefit from prioritizing examination and treatment of those with Unilateral vision loss.
Hiroko Terasaki - One of the best experts on this subject based on the ideXlab platform.
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bilateral central retinal artery occlusion and vein occlusion complicated by severe choroidopathy in systemic lupus erythematosus
Lupus, 2013Co-Authors: Koji M Nishiguchi, Hiroko TerasakiAbstract:Severe retinal vascular occlusions resulting in Blindness is a rare occurrence in patients with systemic lupus erythematosus (SLE). Herein, we report a case of a 33-year-old female who developed combined central retinal artery occlusion, retinal vein occlusion, and choroidopathy and rapidly became completely blind in both eyes within a week. The electroretinogram revealed a severely attenuated a-wave and b-wave, indicating a profound dysfunction of both choroidal and retinal circulation, respectively. The current case demonstrates objectively the functional impact of severe choroidopathy in SLE for the first time. Patients with Unilateral Blindness due to combined retinal/choroidal vascular obstructions should be monitored carefully to ensure adequate anticoagulant therapy in an attempt to guard the vision in the fellow eye.
Come Ebana Mvogo - One of the best experts on this subject based on the ideXlab platform.
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Unilateral childhood Blindness a hospital based study in yaounde cameroon
Clinical Ophthalmology, 2009Co-Authors: Andre Omgbwa Eballe, Emilienne Epee, Godefroy Koki, Lucienne Assumpta Bella, Come Ebana MvogoAbstract:INTRODUCTION We performed an analytic and prospective study over a period of 12 months from January 2nd to December 31st, 2008, at the Gynaeco-Obstetric and Paediatric Hospital of Yaounde, Cameroon. Our aim was to determine the prevalence and causes of Unilateral Blindness in school children aged 6 to 15 years. RESULTS Among the 1,266 children aged 6 to 15 years who were recruited, 60 presented with Unilateral Blindness (4.7%): 42 boys (6.96%) and 18 girls (2.71%). The mean age was 10.15 +/- 3.4 years. In patients with Unilateral Blindness, 65% was due to ocular trauma. DISCUSSION The hospital-based prevalence of Unilateral Blindness in children is relatively high and ocular trauma is the leading etiology. CONCLUSION Unilateral Blindness in school children is avoidable and its incidence could be markedly reduced by emphasizing an information strategy and education based on prevention of ocular trauma. Early management of nontraumatic diseases such as infantile glaucoma and some tumors could improve outcome and avoid Blindness.
Kaya Aksoy - One of the best experts on this subject based on the ideXlab platform.
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Unilateral Blindness due to patient positioning during cervical syringomyelia surgery Unilateral Blindness after prone position
Journal of Neurosurgical Anesthesiology, 1996Co-Authors: Ahmet Bekar, Kudret Tureyen, Kaya AksoyAbstract:SummaryDuring spinal surgery using a horseshoe headrest with the patient in the prone position, the possibility of central retinal artery occlusion (CRAO) increases, and its cause can be attributed primarily to excessive extraocular pressure, a very rare complication. This report describes a case of
