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Study of the Types of Refractive Disturbances Obseved during Hyperglycemia in Humans

Open Journal of Ophthalmology 2022年第2期12卷 142-151页

作者： Angue Tatiana Harly Mba Aki Jean Fidèle Nnang Essone Nesta Ziza Ngaila Daniella Nsame Muriel Obono Akoma Olive Rosine Matsanga Félix Ovono Abessolo Department of Surgery and Specialties University of Health Sciences Libreville Gabon Ophthalmology Unit The Mother-Child University Hospital of Libreville Gabon Department of Physiology University of Health Sciences Libreville Gabon Department of Endocrinology and Metabolic Diseases Libreville Gabon Department of Biochemistry University of Health Sciences Libreville Gabon

Introduction: Refractive disturbances have been observed during hyperglycemia. However, there remains controversy as to the types of disturbances that it induces. Objective: To determine the types of refractive disturbances observed during hyperglycemia in humans. Population and Methods: This was an observational and cross-sectional study with an analytical purpose conducted from July to November 2021. Emmetropia, hypermetropia, and myopia as well as blood glucose levels were compared between day 0 (D0) and day 30 (D30) after initiation of hypoglycemic therapy in 222 people (444 eyes) with recently discovered hyperglycemia (Chi-2;p Results: At D0, the mean of blood glucose was 18.1 mmol/L ± 8.2 vs 6.9 mmol/L ± 3.0 at D30 (p = 0.001). At day 0, 80% (n = 355) of eyes were hypermetropic compared to 73.9% (n = 328) at D30 (p = 0.02). At D0, 14.2% of eyes (n = 63) were myopic compared to 11.3% (n = 50) at D30 (p = 0.02). Refraction improved from 0.75 to 1.5D for 34.5% (n = 18) of hypermetropic eyes and 10.2% (n = 2) of myopic eyes. Conclusion: Our results show that hypermetropia is the most common ametropia during hyperglycemia. Moreover, these data suggest that the normalization of blood glucose improves refraction.

关键词： Hyperglycemia hypermetropia Myopia Hypoglycemic Treatment Libreville

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Prevalence of refraction errors and color blindness in heavy vehicle drivers

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International Journal of Ophthalmology(English edition) 2011年第3期4卷 319-322页

作者： Haydar Erdogan Levent zdemir Seher Arslan Ilhan etin Ayse Vural ze Selma etinkaya Haldun Sümer Department of Ophthalmology Faculty of MedicineCumhuriyet University Department of Public Health Faculty of MedicineCumhuriyet University Department of Medical Education Faculty of MedicineCumhuriyet University

AIM: To investigate the frequency of eye disorders in heavy vehicle ***: A cross-sectional type study was conducted between November 2004 and September 2006 in 200 driver and 200 non-driver persons.A complete ophthalmologic examination was performed,including visual acuity,and dilated examination of the posterior *** used the auto refractometer for determining refractive ***: According to eye examination results,the prevalence of the refractive error was 21.5% and 31.3% in study and control groups respectively (P <0.05).The most common type of refraction error in the study group was myopic astigmatism (8.3%) while in the control group simple myopia (12.8%).Prevalence of dyschromatopsia in the rivers,control group and total group was 2.2%,2.8% and 2.6% ***: A considerably high number of drivers are in lack of optimal visual *** errors in drivers may impair the traffic security.

关键词： refractive error myopia hypermetropia colour blindness

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