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1.
Ophthalmology ; 90(5): 540-5, May 1983.
Artigo em Inglês | MedCarib | ID: med-9334

RESUMO

A randomized prospective clinical trial of feeder vessel photocoagulation for proliferative sickle cell retinopathy was performed. In Chicago, there were 34 argon laser-treated eyes and 30 control eyes. In Kingston, there were 53 xenon arc treated eyes and 50 control eyes. Prolonged loss of visual acuity was rare in both photocoagulated and control eyes. Argon laser and xenon arc feeder vessel photocoagulation reduced the incidence of vitreous hemorrhage and visual loss from vitreous hemorrhage. However, photocoagulation was associated with an increased risk of choroidal neovascularization (xenon arc greater than argon laser) and retinal detachment (argon laser), although visual loss from these complications has not been in these patients so far. (AU)


Assuntos
Humanos , Adulto , Masculino , Feminino , Anemia Falciforme/complicações , Lasers/uso terapêutico , Doenças Retinianas/cirurgia , Lasers/métodos , Corioide/irrigação sanguínea , Ensaios Clínicos como Assunto , Estudo Comparativo , Seguimentos , Lasers/efeitos adversos , /etiologia , Distribuição Aleatória , Descolamento Retiniano/etiologia , Doenças Retinianas/etiologia
2.
Br J Ophthalmol ; 65(3): 192-7, Mar. 1981.
Artigo em Inglês | MedCarib | ID: med-9371

RESUMO

Choroidal neovascularisation occurred in 35 out of 57 (61 percent) patients during a trial of xenon arc photocoagulation in proliferative sickle retinopathy. Nineteen patients manifested abnormal vessel systems in the plane of the retina which tended to be benign, not enlarging and without complications (choroidoretinal neovascularization). In 16 patients the abnormal vessel system grew into the vitreous, tended to increase in size and to be associated with vitreous haemorrhage and retinal traction (choroidovitreal neovascularisation). Both forms of neovascularisation were significantly more common at younger ages. Treatment was generally unsatisfactory, frequently resulting in further enlargement of the lesions. Although the natural history of choroidal neovascularisation and its ultimate effect on visual function remains to be recorded, these lesions constitute a common and potentially serious complication of xenon arc photocoagulation in proliferative sickle retinopathy as currently performed. (Summary)


Assuntos
Humanos , Adolescente , Adulto , Pessoa de Meia-Idade , Masculino , Feminino , Anemia Falciforme/cirurgia , Corioide/irrigação sanguínea , Lasers/efeitos adversos , Lasers/uso terapêutico , Fatores Etários , Angiofluoresceinografia , Seguimentos , Fatores de Tempo , Doenças da Úvea/etiologia , Doenças da Úvea/patologia
3.
Trans Ophthalmol Soc U K ; 100(3): 434-9, Sept. 1980.
Artigo em Inglês | MedCarib | ID: med-9333

RESUMO

Small vessel obstruction characterizes sickle cell disease and when occurring in the peripheral retinal vessels, initiates a sequence of vascular events which may culminate in the development of proliferative sickle retinopathy (PSR). Repeated examinations of the retinal vasculature of patients with different genotypes of sickle cell disease over the last 10 years (Condon and Serjeant,1972a,b,c; 1975; 1980a) have allowed observations on the natural history of PSR and on factors related to its development. Choroidal neovascularization has been a common complication of a trial of xenon arc photo-coagulation in PSR. Observations on the aetiology and natural history of both retinal and choroidal neovascularization are presented in this report. (AU)


Assuntos
Humanos , Criança , Adolescente , Adulto , Masculino , Feminino , Anemia Falciforme/patologia , Corioide/irrigação sanguínea , Vasos Retinianos/patologia , Anemia Falciforme/sangue , Hemoglobina Fetal/análise , Angiofluoresceinografia , Doença da Hemoglobina C/sangue , Doença da Hemoglobina C/patologia , Hemoglobinas/análise , Infarto/patologia
4.
Br J Ophthalmol ; 57(2): 81-8, Feb. 1973.
Artigo em Inglês | MedCarib | ID: med-9372

RESUMO

The vascular occlusive process characteristic of sickle cell disease may affect the retinal circulation and the resulting pathological changes, from peripheral vessel obstructions to a proliferative retinpathy, are well recognized. In the present report, three cases of sickle cell disease are described with an unusual chorioretinopathy. It is suggested that these change may have resulted from the vascular occlusive process affecting the posterior ciliary vessels. (Summary)


Assuntos
Humanos , Adulto , Pessoa de Meia-Idade , Feminino , Anemia Falciforme/complicações , Corioide , Corpo Ciliar/irrigação sanguínea , Degeneração Retiniana/etiologia , Atrofia , Extração de Catarata/efeitos adversos , Dexametasona/uso terapêutico , Edema , Oftalmopatias/tratamento farmacológico , Oftalmopatias/etiologia , Angiofluoresceinografia , Descolamento Retiniano , Talassemia/complicações , Acuidade Visual , Campos Visuais
5.
Carib Med J ; 12(1-2): 48, 1950.
Artigo em Inglês | MedCarib | ID: med-3893
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