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The Various Complications Associated with Use of Silicone Oil in Rhegmatogenous Retinal Detachment (RRD) Surgery via Three-Port Vitrectomy (3PV): A Retrospective Study at the Ophthalmology Center of Abass Ndao Hospital

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Open Journal of Ophthalmology 2024年第3期14卷 250-256页

作者： Soda Mbaye el hadji malick sy Aïssatou Aw Papa Amadou Ndiaye Abass Ndao University Hospital Center Dakar Senegal

Introduction: RRD (Rhegmatogenous Retinal Detachment) is a separation between the neuroepithelium and the pigment epithelium due to the passage of fluid through a retinal dehiscence. It constitutes a major ophthalmologic emergency. Its management is primarily surgical, either through external or internal approaches, with tamponade using gas or silicone oil. The purpose of this study was to report the various complications associated with the use of silicone oil in vitreoretinal surgery. Patients et methods: We conducted a retrospective, descriptive, and analytical study from October 1, 2020, to October 31, 2023, which included all patients who underwent surgery for RRD using three-port vitrectomy (3PV) with tamponade using 1000 centistoke silicone oil (Group 1) and 5000 centistoke silicone oil (Group 2). All patients underwent a complete ophthalmologic examination and were operated on by the same surgeon. Data analysis was performed using Excel software. Results: Overall, 31 patient files representing 33 eyes were collected, with a mean age of 48.83 years and a sex ratio of 4.16. Group 1 consisted of 16 eyes (48.48%), and Group 2 consisted of 17 eyes (51.51%). The different complications observed were cataracts in all phakic subjects, accounting for 57.57%;ocular hypertonia in 69.69% (27.27% in Group 1;42.42% in Group 2);anterior chamber silicone oil migration in 24.24% (9.09% in Group 1;15.15% in Group 2);recurrence of retinal detachment in 21.21% (6.06% in Group 1;15.15% in Group 2);and silicone oil emulsification in 24.24% (15.15% in Group 1;9.09% in Group 2). Additionally, there was one case of corneal degeneration in Group 1. Conclusion: Silicone oil is an effective tamponade agent used in the treatment of retinal detachments. Close patient follow-up is necessary due to the complications associated with its use, which can occur either early or late after surgery.

关键词： Silicone Cataracts OHT Emulsifications

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Eyelid Wounds: Epidemiological, Clinical and Etiological Aspects

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Open Journal of Ophthalmology 2024年第1期14卷 55-62页

作者： Aly Mbara Ka Jean Pierre Diagne Aissatou Aw el hadji malick sy Soda Mbaye Hawo Madina Diallo Audrey Samra Aboubacry Sadikh Sow Joseph Matar Mass Ndiaye Ousmane Ndiaga Senghor Lamine Ndiaye Mohamed Ndiaye Serigne Sohibou Gaye Papa Amadou Ndiaye Ophthalmology Department of Abass Ndao Hospital Dakar Senegal Ophthalmology Department of Aristide Le Dantec Hospital Dakar Senegal

Purpose: The aim is to show epidemiological, clinical and etiological characteristics of palpebral wounds. Methodology: This was a retrospective study focusing on patients with an eyelid wound, over a 10-year period from 2012 to 2021. We collected and analyzed the data using Excel. Results: The frequency of eyelid wounds was 0.1%. The average age of our patients was 19.38 years with a range of 1 and 62 years. The sex ratio was 3.7. Eighty-one percent of patients lived in Dakar. Fifty-seven percent (57%) of patients consulted less than 24 hours after the trauma and 7% of patients on D1. The circumstances were brawls (11%), domestic accidents (9%), road accidents (6%), and work accidents (6%). We noted 1 case of dog bite. Thirteen patients presented with post-traumatic decreased visual acuity. Involvement of the isolated upper eyelid was noted in 40% of cases and both eyelids in 15% of cases. Involvement of the lacrimal ducts was noted in 17% of cases, and that of the free edge in 21% of cases. Eyelid wounds were associated with eyeball damage in 21% of cases. Various associated lesions were observed. Ninety-one percent of patients received surgical treatment. Three cases of superinfections, 1 case of conjunctival granuloma and 1 case of phthysis of the eyeball with postoperative retinal detachment were noted. Conclusion: Eyelid sores are relatively common in our context. They require rapid surgical treatment in order to preserve the functional and aesthetic prognosis. .

关键词： Eyelid Wounds Epidemiology Clinic Etiologies

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Rhegmatogenous Retinal Detachment in One-Eyed Patients: Therapeutic and Prognostic Challenges

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Open Journal of Ophthalmology 2023年第1期13卷 64-72页

作者： el hadji malick sy Aïssatou Aw Aly Mbara Ka Jean Pierre Diagne Hawo Madina Diallo Audrey Samra Soda Mbaye Papa Amadou Ndiaye Ophtalmology Department of Abass NDAO Hospital Cheikh Anta Diop University Dakar Senegal

Background: Retinal detachment is a major ophthalmologic emergency. The rhegmatogenous form is the most common and its management is exclusively surgical as soon as possible. This urgency becomes major and absolute when it occurs in a particular monocular vision. Purpose: To analyze the clinical forms of rhegmatogenous retinal detachment (RRD), the results and the complications of their management in monophthalmic patients. Methodology: This was a retrospective and analytical study from June 2007 to December 2019. We included all patients who received a consultation for rhegmatogenous retinal detachment. All patients were seen by at least two posterior segment specialists and all were operated on by the same surgeon. Results: 57 files (57 eyes) were collected with an average age of 44.71 years and a sex ratio of 7.14. The average consultation time is 40.80 days. Patients complained of decreased visual acuity in 96.49% of cases. We had myopia in 49.12% of cases and 91.23% of patients were phakic. Retinal holes were found in 31.58% of our patients and giant tears in 17.54%. The mean retinal detachment extension was 2.52 quadrants and the macula was raised in 32 cases. The average time taken to take charge was 10 days. Detachment surgery was performed in 42 patients with 100% anatomical recovery. Conclusion: Retinal detachment in one-eyed patient is a major ophthalmic emergency. Its management must not suffer from any delay. Post-operative outcomes are relatively similar between the internal and external pathways. In one-eyed patient, silicone can be left alone in the absence of complications.

关键词： Rhegmatogenous Retinal Detachment One-Eyed Patient Intraocular Surgery Episcleral Surgery Post-Operative Results Complications

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Clinical and Therapeutic Aspects of Pediatric Rhegmatogenous Retinal Detachment on Senegalese Black Population

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Open Journal of Ophthalmology 2023年第3期13卷 327-332页

作者： Aïssatou Aw el hadji malick sy Aly Mbara Ka Jean Pierre Diagne Soda Mbaye Alassane Ba Hawo Madina Diallo Audrey Samra Papa Amadou Ndiaye Ophthalmology Department of Abass NDAO Hospital Cheikh Anta Diop University Dakar Senegal

Background: Rhegmatogenous retinal detachment in children is particular by its severity and challenging treatment. Purpose: To describe the clinical and therapeutic characteristics of pediatric rhegmatogenous retinal detachment. Method: We retrospectively included files of pediatric patients (aged 0 to 15 years), clinically diagnosed with rhematogenous retinal detachment (RRD) between January 2015 and June 2019. The ophthalmological examination was as complete as the age of the patients allowed and a pediatric examination was systematically performed in all children. The data has been processed with Excel 2016 software. Results: 16 eyes of 11 patients were included. The hospital frequency of RRD was 3.37%, with a sex ratio of 1.75 and a mean age of 11.9 years. The average consultation time was 2 months. Contusive eye trauma was reported in 31.25% and myopia in 18.75%. The visual acuity ranged from no light perception to 20/400. The RRD was total in 81.25% and retinal lesions were found in 43.75%, including 25% atrophic holes and tears with lattice degeneration, 12.5% temporal retinal dialysis and one giant tear. Stage B of Proliferative vitreoretinopathy was found in 18.75% and stage C in 56.25%. Scleral buckling was performed in 37.5% and 23G pars plana vitrectomy with silicone oil in 18.75%. The mean duration of follow-up was 24.6 months with anatomical success in 77.7% correlated with functional recovery in 55.5%. The RRD was persistent in one case and a recurrent RRD under silicone was observed in one eye. Two children underwent cataract surgery secondary to vitrectomy, and one case of ocular hypertonia under silicone was noted. Conclusion: Pediatric rhegmatogenous retinal detachment is a severe disease, with essentially traumatic etiology in older children. Delayed diagnosis is a factor in poor prognosis.

关键词： Pediatric Rhegmatogenous Retinal Detachment Trauma Myopia

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Regional Climate Models in the Simulation of the Drought of the 1970’s and 1980’s Years in Senegal (In West Africa)

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Journal of Water Resource and Protection 2024年第9期16卷 585-604页

作者： Mamadou Sarr Adoum Mahamat Moussa malick Wade el hadji Deme Bouya Diop Laboratoire des Sciences de lAtmosphre et des Ocans Matriaux-Energies-Dispositifs (LSAO-MED) Universit Gaston Berger Saint-Louis Sngal Ecole Nationale Suprieur des TIC (ENASTIC) NDjamena Tchad Laboratoire dEtudes et de Recherches en Statistique et Dveloppement (LERSTAD) Universit Gaston Berger Saint-Louis Sngal

West Africa was hit by an unprecedented drought in the 1970’s and 1980’s years, with dramatic consequences for surface and groundwater resources. In the context of climate change, there are many studies for the prediction of the increase in the occurrence of these droughts. To predict this situation in the Senegalese region, it is necessary to use regional climate models, which carrying out the study. This work deals with the interest to examine the capacity of the RCMs (regional climate models) in order to reproduce the deficit on the 1970’s year rainfall in Senegal. In this work, we used daily precipitation data from five (5) regional climate models to characterize the droughts in Senegal by using the SPI (Standardized Precipitation Index) on different time scales (3, 6, 12 and 24 months). For this purpose, the index was calculated over two distinct periods: 1951-1969 and 1970-1990. The results show that the period 1970-1990 was drier than the period 1951-1969. For the zonal average, the results show that the North of Senegal was more affected by this deficit rainfall than the South part. The analysis of the interannual variability of rainfall for some stations in Senegal shows that the drought did not start at the same time throughout the zone.

关键词： Climate Change Drought SPI (Standardised Precipitation Index) Senegal

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Late Diagnosis of Congenital Optic Disc Abnormalities

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Open Journal of Ophthalmology 2024年第3期14卷 229-235页

作者： Aïssatou Aw Soda Mbaye Jean Pierre Diagne sy el hadji malick Alassane Ba Aly Mbara Ka Serigne Sohibou Gaye Ousmane Ndiaga Senghor Lamine Ndiaye Mouhamed Ndiaye el Hadj Abdellahi Seyid Papa Amadou Ndiaye Ophthalmology Department of Abass NDAO Hospital Cheikh Anta Diop University Dakar Senegal

Purpose: To show epidemiological and imaging aspects of congenital optic disc abnormalities diagnosed late. Method: It was a retrospective study, including all patients with congenital optic disc abnormalities diagnosed at a late age between January 2020 and October 2022 at the eye center of Abass Ndao Hospital. Complete ophthalmological examination was performed with eye imaging according to the cases. Results: 09 patients (10 eyes) were diagnosed with congenital optic disc abnormalities. The mean age was 29 years, with a sex ratio of 0.8. Three patients had consulted for unilateral decreased visual acuity since childhood, two for sudden vision loss and in four cases the diagnosis was fortuitous. Visual acuity was ranged from 1/200 to 20/20. Fundus examination showed myelinated retinal nerve fibers in four eyes, optic disc pit in three eyes including two complicated by maculopathy, two cases of morning glory syndrome and a case of pseudoduplication of the optic disc. Optical coherence tomography, ocular ultrasound B and OCT-Angiography were performed according to the cases. Conclusion: Congenital optic disc abnormalities are often diagnosed late. They are potentially amblyogenic and complications are not rare, worsening the visual prognosis. Their screening should be systematic by ophthalmological examination in newborns.

关键词： Myelinated Nerves Fibers Optic Disc Pit Morning Glory syndrome Pseudoduplication Optic Disc

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The Acute Angle Closure Crisis in Senegalese Melanodermas: Epidemiological and Clinical Aspects of 24 Cases

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Open Journal of Ophthalmology 2023年第4期13卷 407-412页

作者： sy el hadji malick Aw Aissatou Soda Mbaye Mouhamed Ndiaye Aly Mbara Ka Jean Pierre Diagne Aboubacry Sadikh Sow Joseph Matar Mass Ndiaye Paule Aida Ndoye Papa Amadou Ndiaye AbassNdao University Hospital Center Dakar Senegal Aristide Le Dantec University Hospital Center Dakar Senegal

Introduction Acute angle closure crisis (AACC) is a major ophthalmic emergency. It is a sight-threatening pathology that is very common in women but rarely described in melanodermas. The aim of this work is to investigate the epidemiological and clinical aspects of acute angle closure crisis. Results We collected 24 patient records, totaling 25 eyes. The average age of our patients was 52.04 years, with a male-to-female ratio of 0.6. A family history of glaucoma occurred in 34% of patients. Patients consulted for a painful red eye associated or not with decreased visual acuity (DVA). The condition was bilateral in one patient. The average visual acuity wax 0.34/10e. The cornea was cloudy and the pupil in areflexic mydriasis in all sick eyes. Hypothalamia was present in 72% of eyes and cataracts in 54.16% of cases. The average intraocular press was 44.38 mmHg and the average cup/disc (C/D) was 0.46. Gonioscopy was performed in 7 patients. The fellow eye did not present any abnormalities in 92% of cases. Conclusion The acute angle closure crisis is a rare condition in melanodermas and common in woman. His diagnostic is essentially clinical and completed by gonioscopy which plays a fundamental role. .

关键词： Acute Crisis Angle Hypertonia Gonioscopy

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Study of the Spatio-Temporal Variability of Rainfall in the Northern Region of Senegal

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Journal of Geoscience and Environment Protection 2023年第4期11卷 1-14页

作者： Aichétou Dia Diop Abdoul Karim Mbodji el hadji Deme malick Wade Mahamat Adoum Moussa Abdoulaye Bouya Diop Younousse Biaye Djiby Sarr Abdou Karim Farota Aboubakary Diakhaby Bouya Diop Laboratoire des Sciences de l’Atmosphère et des Océans Matériaux Energies Dispositifs UGB Saint Louis Senegal Laboratoire D’études et de Recherches en Statistiques et Développement University Gaston Berger (UGB) Saint Louis Senegal Ecole Nationale Supérieure des TIC N’Djamena Tchad

Senegal is a country of the Sahel. In this region, most of the populations live from agro-pastoral activities. The northern zone of Senegal is strongly influenced by river cultures. And the dynamics of the Senegal River are dependent on rainfall. The rainfall in the area is very closely linked to the dynamics of the atmosphere. The study of the spatio-temporal variability of rainfall in the northern region of Senegal requires quality rainfall observation data. It includes the Ferlo and the Senegal River valley, in particular the regions of Louga (department of Linguère included), Saint-Louis (departments of Dagana and Podor included) and Matam. These stations have been defined since Le Borgne (1988). The difficulty of having quality rain observation data can be resolved by using more accessible and good quality satellite data. Using satellite data, namely MSWEP, CRU, TAMSAT, ARC and PERSIANN, we showed the return of precipitation that appeared in 2000 and the unimodal cycle of precipitation in our study area. These data were validated using the correlation coefficient, the bias, the RMSE and the Nash index with observation data from the Regional Study Center for the Improvement of Adaptation to Drought (CERASS). The CRU data is then retained. Thus, this study made it possible to show the zonal distribution of rainfall in the northern zone of Senegal.

关键词： Rainfall in the Northern Region of Senegal Variability of Rainfall Satellite Data The Zonal Distribution of Rainfall

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Association between Uric Acid and Metabolic syndrome in Homozygous Sickle Cell Patients

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Advances in Biological Chemistry 2021年第3期11卷 142-148页

作者： Kandji Pape Matar Djite Moustapha Barry Nene Oumou Kesso Sagne Rene Ngor Thioune Ndeye Mareme Mbacke Ndoumbé Mame Ndour el hadji malick Gueye-Tall Fatou Lopez-Sall Philomene Cisse Aynina Diop Pape Amadou Gueye Papa Madieye Laboratory of Biochemistry-Hematology National University Hospital of Fann Dakar Senegal Laboratory of Pharmaceutical Biochemistry Faculty of Medicine Pharmacy Cheikh Anta Diop University Dakar Senegal

The objective of this study was to assess the association between uric acid and the metabolic syndrome and its components in homozygous sickle cell patients. This is a prospective case/control study of sickle cell SS patients. Each patient was matched to a control of the same sex and age ± 2 years. In our framework, we used the criteria for defining metabolic syndrome according to International Diabetes Federation (IDF) 2009. Assay of all biological parameters was performed with the ARCHITECT ci4100, Abbot (Chicago, Illinois, USA). Data were collected with Excel 2016 software and statistical analysis was done using XLSTAT 2019 software. Student’s T test was used to compare means and a p-

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Positive Surgical Margins (PSM) after Open Retropubic Radical Prostatectomy: Evaluation of Patient Survival

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Open Journal of Urology 2021年第7期11卷 282-288页

作者： Babacar Sine Abdoulaye Ndiath Ndéye Aissatou Bagayogo Alioune Sarr Amath Thiam Cyrille Ze Ondo Ousmane Sow el hadji malick Diaw Moussa Séne Babou Sakho Cheikh Bécaye Gassama Ibrahima Ngom Yaya Sow Babacar Diao Alain Khassim Ndoye Urology Andrology Department of Aristide Le Dantec Hospital Dakar Sénégal Urology Andrology Department of Ouakam Military Hospital Dakar Sénégal

Background: Many patients who have had radical prostatectomy for prostate cancer may present with microscopic extraprostatic extension of the disease. Positive surgical margins are a common pathological finding in this subgroup of patients. To report the epidemiological, clinical and therapeutic aspects of PSM after radical prostatectomy (RP) and to evaluate the follow-up of patients. Patients and methods: A single-center retrospective descriptive study of patients who underwent radical prostatectomy between June 1, 2004 and December 31, 2019 was conducted. Patients who had radical prostatectomy with PSM on pathology report were included. The parameters studied were age, initial prostate specific antigen (PSA), Gleason and International Society of Uropathology (ISUP) scores, cTNM and pTNM stages, operative technique, PSA levels after surgery, adjuvant treatment and patient survival. Results: Eighty-six (86) radical prostatectomies were performed. PSM was found in 23 patients (26.7%). The mean age of the patients was 63.7 ± 6.1 years. The mean preoperative total PSA was 31.5 ng/mL (6.31 - 146 ng/mL). Prostate biopsy showed only prostatic adenocarcinoma. Thoracic-abdominopelvic CT was performed in all patients. Prostate cancers were found at the localized stage in 12 patients and locally advanced in 11 patients. A classification adjustment was obtained after pathological examination of the surgical specimen. The ISUP score 3 and 1 on the surgical specimen were in the majority with 9 and 7 patients respectively. After the recurrence, all patients who consented received hormone therapy, which was either medical with Goserelin and Triptorelin (7 patients) or surgical with testicular pulpectomy (1 patient). PSA was undetectable (Conclusion: RP with PSM is a fai

关键词： Prostate Cancer Surgical Margins Survival

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