Ocular findings in sickle cell disease patients in Lagos.
ABSTRACT Sickle cell disease has varied manifestations in all systems of the body, ocular manifestations can be severe and sudden blindness may result amidst other complications. The study aims at determining the ocular findings in patients with sickle cell anaemia (HbSS) and sickle cell haemoglobin C disease (HbSC). 99 subjects were recruited into the study carried out at the Lagos University Teaching Hospital over a 2 year period. A structured interview questionnaire was administered and physical examination was carried out at the Medical Out Patients' Sickle Cell Clinics. Subsequently in the (Guinness) Eye centre, examination for ocular manifestations was carried out using Snellen's chart, Slit light microscopy, direct and indirect ophthalmoscopy under mydriasis (with Gutt Tropicamide 1% , epinephrine 10% ) as well as tonometry and gonioscopy. The age of the 99 (51 males, 48 females) patients ranged from 13 to 43 years with a mean +/-SD of 20.42 +/- 6.13. There were 88 (88.9% ) SS and 11 (11.1% ) SC patients. The male to female ratio was 1.1: 1. Normal vision was present in 95 (96% ) of the patients [86 (97.8% ) SS and 9 (81.8% ) SC] while 4 (4.0% ) of the patients [2 (2.2% ) SS and 2 (18.2% ) SC] had impaired vision. Of the complaints, blurred vision was found in 12 (13.6% ) SS and one (9.0% ) SC patients. Itching of the eyes was found in 15 (17.0% ) SS and 3 (27.3% ) SC patients. Icterus was found in 50 (50.5% ), conjunctival signs were found in 49 (49.5% ), retinal vascular tortuosity was in 12 (12 .10% ), peripheral retinal degeneration was in 5 (5% ), iridescent spots was in 3 (3% ) and optic atrophy in 2 (2% ) patients. The tortuosity of major fundus vessels were graded into 4 according to Hook and Cooper's criteria 87 (87.9% ) of the patients were in grade 0. The conjunctival vessels anomalies were classified into 5 grades (criteria of Sergeant). 37 (37.5% ) were in grade 0, 35 (35.3% ) in grade 1, 8 (8.1% ) in grade 2, 7 (7.1% ) in grade 3 and 12 (12.1% ) in grade 4. Conjunctival abnormalities occur commonly while proliferative retinopathy and optic atrophy were uncommon in sickle cell disease patients in Lagos. Further studies are required with a larger number of subjects to investigate the low incidence of proliferative retinopathy and optic atrophy in Lagos.
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ABSTRACT: Objective the aim of the present study was to characterize sickle cell disease retinopathy in children and teenagers from Bahia, the state in northeastern Brazil with the highest incidence and prevalence of sickle cell disease. Methods a group of 51 sickle cell disease patients (36 hemoglobin SS and 15 hemoglobin SC) with ages ranging from 4 to 18 years was studied. Ophthalmological examinations were performed in all patients. Moreover, a fluorescein angiography was also performed in over 10-year-old patients. Results the most common ocular lesions were vascular tortuosity, which was found in nine (25%) hemoglobin SS patients, and black sunburst, in three (20%) hemoglobin SC patients. Peripheral arterial closure was observed in five (13.9%) hemoglobin SS patients and in three (13.3%) hemoglobin SC patients. Arteriovenous anastomoses were present in six (16.5%) hemoglobin SS patients and six (37.5%) hemoglobin SC patients. Neovascularization was not identified in any of the patients. Conclusions this study supports the use of early ophthalmological examinations in young sickle cell disease patients to prevent the progression of retinopathy to severe disease and further blindness.Revista Brasileira de Hematologia e Hemoterapia 09/2014;
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ABSTRACT: BACKGROUND: Sickle cell disease (SCD) is characterised by occlusion of small blood vessels. This study aimed to assess retinal changes in patients with SCD and its correlation with time-averaged mean flow velocity (TAMV) in middle cerebral arteries (MCA) and ophthalmic arteries (OA). METHODS: Sixty SCD patients (aged 3-18 years) attending a paediatric hospital in Cairo, Egypt, during March 2010 to November 2011, were compared with 30 healthy controls. All underwent clinical and fundus examination by indirect ophthalmoscopy, and assessment of TAMV in MCAs and OAs by transcranial Doppler, repeated 1 year later for those with conditional velocities. RESULTS: HbS/β was diagnosed in 32 patients and HbSS in 28; 50 patients had normal fundus and 10 had bilateral non-proliferative retinopathy. Risk factors for retinopathy included HbSS, age, previous stroke, non-compliant hydroxyurea (HU) therapy, frequency of sickling crises and HbS level. TAMVs were increased in MCAs, but not in OAs, in sicklers. TAMVs in MCAs and OAs increased with non-compliant HU therapy, previous stroke, age, frequency of sickling crises and level of HbS. No significant interhemispheric difference was found. CONCLUSION: Sickle retinopathy was correlated with TAMV in MCAs but not in OAs. A significant difference was found between initial and follow-up TAMVs in the MCAs, after 1 year of regular HU and transfusion therapy, in those with conditional velocities.Transactions of the Royal Society of Tropical Medicine and Hygiene 02/2013; · 1.93 Impact Factor
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ABSTRACT: Abstract: Background: Angiogenesis is a contributing factor in some retinal diseases, hence the role of vascular endothelial growth factor (VEGF) as a common pathway in proliferative retinopathies. Bevacizumab has been found to be effective in the treatment of these diseases. The aim of this study was to review all cases of intravitreal bevacizumab given in the retinal unit of the University College Hospital, Ibadan from July, 2010 to June 2012, pointing out the common indications. Methods: After obtaining ethical approval from the University College Hospital/University of Ibadan Review Board for the study, all cases of intravitreal injections of bevacizumab recorded in the retinal register during the study period (July 2010 to June 2012) were retrieved. Age, sex, diagnoses and indication for injection were recorded in the data sheet prepared for the study. Results were analyzed using proportions and percentages. Results: A total of one hundred and thirty four injections of bevacizumab were given in the study period. The most common indication was cystoid macular edema from retinal vein occlusion ([26(19.4%)] followed by wet age related maculopathy [23(17.1%)] and sickle cell retinopathy [(22(16.4)]. Emerging indications included idiopathic polypoidal choroidal vasculopathy [8(6%) and retinal macroaneurism with macular edema [6(4.5%)]. Conclusion: Cystoid macular edema from vascular occlusion and wet age related macular degeneration are the major indications for intravitreal bevacizumab injection in Ibadan.The Open Ophthalmology Journal 11/2014; 8:87-90.