28 results on '"Mérula, Rafael Vidal"'
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2. Effects of age, gender, race, biometric parameters and refractive error on retinal nerve fiber layer of acute primary angle closure and fellow eyes
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Cronemberger, Sebastião, Mérula, Rafael Vidal, Calixto, Nassim, and Érica De Abreu Borges
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- 2015
- Full Text
- View/download PDF
3. Comparison between recent and old acute primary angle closure cases in Brazilians for retinal nerve fiber layer damage
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Cronemberger, Sebastião, Mérula, Rafael Vidal, Calixto, Nassim, and Érica De Abreu Borges
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- 2015
- Full Text
- View/download PDF
4. Plateau iris configuration in eyes with narrow-angle: an ultrasound biomicroscopic study
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Diniz Filho, Alberto, Cronemberger, Sebastião, Ferreira, Dollores Martins, Mérula, Rafael Vidal, and Calixto, Nassim
- Subjects
Glaucoma, angle-closure ,Iris diseases ,Gonioscopy ,Gonioscopia ,Anterior chamber ,Glaucoma de ângulo fechado ,Doenças da íris ,Câmara anterior - Abstract
PURPOSE: To investigate, through ultrasound biomicroscopy images, the presence of plateau iris configuration in eyes with narrow-angle from patients with open-angle glaucoma and in eyes with previous acute primary angle-closure and compare the biometric features of eyes with plateau iris configuration with those of normal eyes. METHODS: Ultrasound biomicroscopic images from 196 patients with open-angle glaucoma and narrow-angle and 32 patients with acute primary angle-closure were retrospectively analyzed. The inclusion and specific criteria for the diagnosis of plateau iris configuration was the presence of an anterior positioning of the ciliary processes, supporting the peripheral iris so that it was parallel to the trabecular meshwork; the iris root had a steep rise from its insertion point, followed by a downward angulation from the corneoscleral wall; presence of a central flat iris plane; an absent (complete plateau iris configuration) or partially absent (incomplete plateau iris configuration) ciliary sulcus. The ultrasound biomicroscopic parameters were compared between complete and incomplete plateau iris configuration. The same parameters of both groups were compared with those of normal eyes. The following measurements were performed: anterior chamber depth; angle opening distance at 500 µm from the scleral spur; peripheral iris thickness at 500 µm from the scleral spur; iris-ciliary process distance; trabecular-ciliary process distance and angle recess area. RESULTS: Plateau iris configuration was found in 33 eyes of 20 (10.2%) out of 196 patients with open-angle glaucoma and narrow-angle and in 4 eyes of 2 (6.3%) out of 32 patients with acute primary angleclosure. Seventeen (77.3%) patients with plateau iris configuration were female and 5 (22.7%) male. Twenty-three (62.2%) out of 37 eyes had complete plateau iris configuration, and 14 (37.8%) had incomplete plateau iris configuration. Complete and incomplete plateau iris configuration presented similar biometric features with the exception of the iris-ciliary process distance. All plateau iris configuration eyes showed biometric parameters completely different from those of normal eyes except for peripheral iris thickness at 500 µm from the scleral spur. CONCLUSIONS: Plateau iris configuration was present in 10.2% of patients with open-angle glaucoma and narrow-angle and in 6.3% of patients with acute primary angle-closure. Biometric features were similar in eyes with complete and incomplete plateau iris configuration with the exception of iris-ciliary process distance. Compared to normal eyes, all plateau iris configuration eyes showed biometric parameters completely different except for peripheral iris thickness at 500 µm from the scleral spur. OBJETIVO: Investigar, através de imagens de biomicroscopia ultrassônica, a presença de configuração da íris em platô em olhos com seio camerular estreito em portadores de glaucoma primário de ângulo aberto e em olhos com fechamento angular primário agudo. Avaliar as características biométricas nestes olhos, comparando-os a olhos normais. MÉTODOS: As imagens de biomicroscopia ultrassônica foram analisadas retrospectivamente, sendo que 196 pacientes eram portadores de glaucoma primário de ângulo aberto e 32 pacientes eram portadores de fechamento angular primário agudo. O critério de inclusão para configuração da íris em platô baseado em imagens de biomicroscopia ultrassônica foi definido pela presença de corpo ciliar posicionado anteriormente, íris acentuadamente angulada em seu ponto de inserção seguida de uma angulação descendente a partir da parede corneoescleral, íris central plana e sulco ciliar ausente (configuração da íris em platô completa) ou parcialmente ausente (configuração da íris em platô incompleta). Os parâmetros biométricos medidos pela biomicroscopia ultrassônica foram comparados entre os olhos com configuração da íris em platô completa e incompleta. Os mesmos parâmetros de ambos os grupos foram comparados com os de olhos normais. Foram medidos: profundidade central da câmara anterior; a distância da abertura do ângulo a 500 µm do esporão escleral; a espessura da íris a 500 µm do esporão escleral; a distância íris-processo ciliar, a distância faixa trabecular-processo ciliar e a área de recesso angular. RESULTADOS: A configuração da íris em platô foi encontrada em 33 olhos de 20 pacientes portadores de glaucoma primário de ângulo aberto (10,2% de um total de 196) e 4 olhos de 2 pacientes portadores de fechamento angular primário agudo (6,3% de um total de 32). Dezessete (77,3%) eram do sexo feminino e 5 (22,7%) do sexo masculino. Dos 37 olhos, 23 (62,2%) apresentaram configuração da íris em platô completa e 14 (37,8%) apresentaram configuração da íris em platô incompleta. Olhos com configuração da íris em platô completa e incompleta apresentaram características biométricas muito similares exceto para a distância íris-processo ciliar. Olhos com configuração da íris em platô possuem características biométricas completamente diferentes das de olhos normais exceto a espessura da íris a 500 µm do esporão escleral. CONCLUSÕES: A configuração da íris em platô esteve presente em 10,2% dos pacientes portadores de glaucoma primário de ângulo aberto e em 6,3% dos pacientes portadores de fechamento angular primário agudo. Entre a configuração da íris em platô completa e incompleta, foi encontrada diferença estatisticamente significativa apenas na distância íris-processo ciliar. Quando comparados olhos normais e olhos com configuração da íris em platô, todos os parâmetros apresentaram diferenças altamente significativas, à exceção de espessura da íris a 500 µm do esporão escleral.
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- 2010
5. Plateau iris
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Diniz Filho, Alberto, Cronemberger, Sebastião, Mérula, Rafael Vidal, and Calixto, Nassim
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Glaucoma, angle-closure ,Iris diseases ,Gonioscopy ,Syndrome ,Gonioscopia ,Anterior chamber ,Glaucoma de ângulo fechado ,Doenças da íris ,Síndrome ,Câmara anterior - Abstract
The term plateau iris was first coined in 1958 to describe the iris configuration of a patient. Two years later the concept of plateau iris was published. In 1977, the plateau iris configuration was classically defined as presurgical changes of an eye with a relative normal central anterior chamber depth, flat iris by conventional biomicroscopy, but displaying an extremely narrow or closed angle on gonioscopic examination. On the other hand, the plateau iris syndrome was defined as an acute glaucoma crisis in one eye with a relative normal central anterior chamber depth and patent iridotomy on direct examination, presenting angle closure confirmed by gonioscopic examination after mydriasis. In 1992, the anatomic aspects of plateau iris were studied using ultrasound biomicroscopy. Finally, plateau iris has been considered an anatomic variant of iris structure in which the iris periphery angulates sharply forward from its insertion point and then again angulates sharply and centrally backward, along with an anterior positioning of the ciliary processes seen on ultrasound biomicroscopy. The clinical treatment of plateau iris syndrome is carried out with topical use of pilocarpine. However, the definitive treatment should be fulfilled by performing an argon laser peripheral iridoplasty. O termo íris em platô foi primeiramente inventado em 1958 para descrever a configuração da íris de um paciente. Dois anos depois o conceito de íris em platô foi publicado. Em 1977, a configuração de íris em platô foi classicamente definida como alterações pré-cirúrgicas de um olho com uma profundidade de câmara anterior relativamente normal, íris plana pela biomicroscopia convencional, mas mostrando um ângulo extremamente estreito ou fechado pela gonioscopia. Por outro lado, a síndrome de íris em platô foi definida como uma crise de glaucoma agudo em um olho com uma profundidade de câmara anterior relativamente normal e uma iridectomia patente ao exame direto, apresentando fechamento angular confirmado pela gonioscopia após midríase. Em 1992, as alterações anatômicas dessa anomalia foram estudadas utilizando a biomicroscopia ultra-sônica. Finalmente, a configuração de íris em platô refere-se à alteração anatômica em que há a angulação anterior da periferia da íris, do seu ponto de inserção na parede do ângulo iridocorneal e centralmente, com anteriorização dos processos ciliares, diagnosticada pela biomicroscopia ultra-sônica. O tratamento clínico da síndrome da íris em platô pode ser feito com a administração tópica de pilocarpina, porém o tratamento definitivo é feito com a iridoplastia periférica com o laser de argônio.
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- 2008
6. Incidência de glaucoma agudo primário no Serviço de Glaucoma do Hospital São Geraldo
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Mérula, Rafael Vidal, Cronemberger, Sebastião, and Calixto, Nassim
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Biometria ,Estudo transversal ,Biometry ,genetic structures ,Fatores de risco ,Risk factors ,Glaucoma, angle-closure ,Estudo comparativo ,sense organs ,Comparative study ,Glaucoma de ângulo fechado ,eye diseases - Abstract
OBJETIVOS: Determinar a incidência do glaucoma agudo primário no Serviço de Glaucoma do Hospital São Geraldo; estabelecer o perfil destes pacientes e identificar possíveis fatores de risco. MÉTODOS: Estudo transversal. Período de análise: setembro/2005 a agosto/2006. Inclusão: diagnóstico de glaucoma agudo primário. Exclusão: presença de catarata que acarrete baixa acuidade visual ou miopização, glaucomas secundários, íris em platô. Foram avaliados: número de atendimentos, incidência de glaucoma agudo primário, idade, sexo, raça, história familiar de glaucoma, ceratometria, e dados biométricos. RESULTADOS: Dentre 879 pacientes atendidos, 20 (2,3%) tiveram o diagnóstico de glaucoma agudo primário, desse modo, a incidência de glaucoma agudo primário foi de 22,7 por 1000 atendimentos. Dos pacientes com glaucoma agudo primário: 6 (30,0%) eram do sexo masculino e 14 (70,0%) feminino; a idade variou de 40 a 73 anos (média: 60,4 ± 8,1 anos); 12 (60,0%) eram leucodérmicos e 8 (40,0%) feodérmicos; 5 (25,0%) com história familiar positiva para glaucoma. O risco relativo para o sexo feminino foi de 1,44 (IC 95%). Onze (55,0%) pacientes tiveram glaucoma agudo primário no olho direito e 9 (45,0%) no esquerdo. Não houve diferença estatisticamente significativa na comparação dos parâmetros biométricos e ceratometria entre os olhos afetados e os contralaterais. CONCLUSÕES: A incidência de glaucoma agudo primário no Serviço de Glaucoma do Hospital São Geraldo foi de 22,7 por 1000 atendimentos, sendo mais freqüente em mulheres, leucodérmicas, com história familiar negativa para glaucoma e média de idade de 60,4 anos. Os olhos afetados e olhos contralaterais foram semelhantes nos parâmetros biométricos. PURPOSE: To determine the incidence of the primary angle-closure glaucoma at the Glaucoma Service of São Geraldo Hospital, to establish the profile of these patients and to identify the possible risk factors. METHODS: Transversal study. Period of assessment: from September/2005 to August/2006. Inclusion criteria: diagnosis of primary angle-closure glaucoma. Exclusion criteria: presence of cataracts that cause low visual acuity or index-myopia, secondary glaucoma, plateau iris. Number of visits, incidence of primary angle-closure glaucoma, age, gender, race, family history of glaucoma, keratometric, and biometric data were assessed. RESULTS: Of 879 attended patients, 20 (2.3%) had the diagnosis of primary angle-closure glaucoma, therefore, the incidence of the primary angle-closure glaucoma was 22.7 cases per 1000 attended. Of those patients with primary angle-closure glaucoma: 6 (30.0%) were men and 14 (70.0%) women; the age varied from 40 to 73 years (average: 60.4 ± 8.1 years); 12 (60.0%) were leukodermics and 8 (40.0%) pheodermics; 5 (25.0%) with positive familiar history of glaucoma. The relative risk for women was 1.44 (95% IC). Eleven (55.0%) patients had primary angle-closure glaucoma of the right eye and 9 (45.0%) of the left. When biometric data and keratometry were compared between the affected and contralateral eye, no statistical significant difference was observed. CONCLUSIONS: The incidence of the primary angle-closure glaucoma at the Glaucoma Service of São Geraldo Hospital was 22.7 cases per 1000 attended. It was more frequent in leukodermic women, without family history of glaucoma and with an average age of 60.4 years. The affected and contralateral eyes were biometrically similar.
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- 2008
7. New comparative clinical and biometric findings between acute primary angle-closure and glaucomatous eyes with narrow angle
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Mérula, Rafael Vidal, primary, Cronemberger, Sebastião, additional, Diniz Filho, Alberto, additional, and Calixto, Nassim, additional
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- 2010
- Full Text
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8. Plateau iris configuration in eyes with narrow-angle: an ultrasound biomicroscopic study
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Diniz Filho, Alberto, primary, Cronemberger, Sebastião, additional, Ferreira, Dollores Martins, additional, Mérula, Rafael Vidal, additional, and Calixto, Nassim, additional
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- 2010
- Full Text
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9. New considerations on pupillary block mechanim
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Cronemberger, Sebastião, primary, Calixto, Nassim, additional, Andrade, André Oliveirade, additional, and Mérula, Rafael Vidal, additional
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- 2010
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10. Comparative biometric study between plateau iris configuration and primary open angle glaucoma with narrow angle
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Diniz Filho, Alberto, primary, Cronemberger, Sebastião, additional, Mérula, Rafael Vidal, additional, and Calixto, Nassim, additional
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- 2009
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11. New comparative ultrasound biomicroscopic findings between fellow eyes of acute angle closure and glaucomatous eyes with narrow angle
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Mérula, Rafael Vidal, primary, Cronemberger, Sebastião, additional, Diniz Filho, Alberto, additional, and Calixto, Nassim, additional
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- 2008
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12. Plateau iris
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Diniz Filho, Alberto, primary, Cronemberger, Sebastião, additional, Mérula, Rafael Vidal, additional, and Calixto, Nassim, additional
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- 2008
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13. Análise morfométrica comparativa entre olhos com glaucoma agudo primário e olhos contralaterais
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Mérula, Rafael Vidal, primary, Cronemberger, Sebastião, additional, Diniz Filho, Alberto, additional, and Calixto, Nassim, additional
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- 2008
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14. Incidência de glaucoma agudo primário no Serviço de Glaucoma do Hospital São Geraldo
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Mérula, Rafael Vidal, primary, Cronemberger, Sebastião, additional, and Calixto, Nassim, additional
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- 2008
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15. Espessura corneana central e densidade das células endoteliais corneanas centrais após trabeculectomia com e sem mitomicina C
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Mérula, Rafael Vidal, primary, Diniz Filho, Alberto, additional, Gomes, Roberto de Alencar, additional, Cronemberger, Sebastião, additional, and Calixto, Nassim, additional
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- 2008
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16. The influence of thalamosinusotomy under different constant intraocular pressures on aqueous outflow facility in isolated porcine eyes
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Mérula, Rafael Vidal, primary, Haefliger, Ivan O., additional, Cronemberger, Sebastião, additional, and Calixto, Nassim, additional
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- 2008
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17. Efeitos cardiovasculares e midriáticos da fenilefrina tópica a 2,5 e a 10,0% em voluntários sadios
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Diniz Filho, Alberto, primary, Frasson, Maria, additional, Mérula, Rafael Vidal, additional, Morais, Patrick Reis, additional, and Cronemberger, Sebastião, additional
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- 2007
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18. Prevalência de cistos iridociliares em exames de biomicroscopia ultra-sônica
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Cronemberger, Sebastião, primary, Ferreira, Dollores Martins, additional, Diniz Filho, Alberto, additional, Mérula, Rafael Vidal, additional, and Calixto, Nassim, additional
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- 2006
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19. Degeneração marginal pelúcida da córnea: diagnóstico e tratamento
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Mérula, Rafael Vidal, primary and Trindade, Fernando Cançado, additional
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- 2006
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20. Catarata infantil: importância do diagnóstico e tratamento precoces
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Mérula, Rafael Vidal, primary and Fernandes, Luciene Chaves, additional
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- 2005
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21. Plateau iris configuration in eyes with narrow-angle: an ultrasound biomicroscopic study.
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Filho, Alberto Diniz, Cronemberger, Sebastião, Ferreira, Dollores Martins, Mérula, Rafael Vidal, and Calixto, Nassim
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ANGLE-closure glaucoma ,SLIT lamp microscopy ,IRIS (Eye) examination ,GONIOSCOPY ,IRIS (Eye) diseases - Abstract
Copyright of Arquivos Brasileiros de Oftalmologia is the property of Arquivos Brasileiros de Oftalmologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2010
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22. Comparative biometric study between plateau iris configuration and primary open angle glaucoma with narrow angle.
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Filho, Alberto Diniz, Cronemberger, Sebastião, Mérula, Rafael Vidal, and Calixto, Nassim
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GLAUCOMA ,BIOMETRY ,EYE diseases ,CORNEA ,OPHTHALMOLOGY - Abstract
Copyright of Arquivos Brasileiros de Oftalmologia is the property of Arquivos Brasileiros de Oftalmologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2009
- Full Text
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23. [Incidence of primary angle-closure glaucoma in the Glaucoma Service of the São Geraldo Hospital].
- Author
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Mérula RV, Cronemberger S, and Calixto N
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- Adult, Aged, Brazil epidemiology, Case-Control Studies, Cross-Sectional Studies, Family Characteristics, Female, Glaucoma, Angle-Closure etiology, Hospitals, Humans, Incidence, Male, Middle Aged, Racial Groups statistics & numerical data, Risk Factors, Glaucoma, Angle-Closure epidemiology
- Abstract
Purpose: To determine the incidence of the primary angle-closure glaucoma at the Glaucoma Service of São Geraldo Hospital, to establish the profile of these patients and to identify the possible risk factors., Methods: Transversal study. Period of assessment: from September/2005 to August/2006., Inclusion Criteria: diagnosis of primary angle-closure glaucoma., Exclusion Criteria: presence of cataracts that cause low visual acuity or index-myopia, secondary glaucoma, plateau iris. Number of visits, incidence of primary angle-closure glaucoma, age, gender, race, family history of glaucoma, keratometric, and biometric data were assessed., Results: Of 879 attended patients, 20 (2.3%) had the diagnosis of primary angle-closure glaucoma, therefore, the incidence of the primary angle-closure glaucoma was 22.7 cases per 1000 attended. Of those patients with primary angle-closure glaucoma: 6 (30.0%) were men and 14 (70.0%) women; the age varied from 40 to 73 years (average: 60.4 +/- 8.1 years); 12 (60.0%) were leukodermics and 8 (40.0%) pheodermics; 5 (25.0%) with positive familiar history of glaucoma. The relative risk for women was 1.44 (95% IC). Eleven (55.0%) patients had primary angle-closure glaucoma of the right eye and 9 (45.0%) of the left. When biometric data and keratometry were compared between the affected and contralateral eye, no statistical significant difference was observed., Conclusions: The incidence of the primary angle-closure glaucoma at the Glaucoma Service of São Geraldo Hospital was 22.7 cases per 1000 attended. It was more frequent in leukodermic women, without family history of glaucoma and with an average age of 60.4 years. The affected and contralateral eyes were biometrically similar.
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- 2008
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24. [Comparative morphometric assessment between eyes with acute primary angle-closure glaucoma and contralateral eyes].
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Mérula RV, Cronemberger S, Diniz Filho A, and Calixto N
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- Acute Disease, Adult, Aged, Anterior Chamber anatomy & histology, Anterior Chamber pathology, Brazil, Case-Control Studies, Female, Gonioscopy, Humans, Male, Middle Aged, Prospective Studies, Refractive Errors pathology, Vision Tests, Visual Acuity physiology, Glaucoma, Angle-Closure pathology
- Abstract
Purpose: To establish the profile of patients with acute primary angle-closure glaucoma (APACG) and to assess comparatively clinical and morphometric parameters between eyes with APACG and contralateral eyes (CLEs)., Methods: Prospective study including patients attended from September 2005 to March 2007., Inclusion Criteria: diagnosis of APACG., Exclusion Criteria: presence of cataract (except for "glaukomflecken") that may cause low visual acuity or myopization, secondary glaucoma, previous APAGC or surgical procedure in the (CLE), no possibility to control the acute crisis of glaucoma clinically, plateau iris. The following were evaluated: incidence of APACG, age, gender, race, family history of glaucoma, corrected visual acuity (CVA) and uncorrected visual acuity (UVA), spherical equivalent (SE), cup/disc ratio (C/D), gonioscopy, keratometry (K), central corneal thickness (CCT), and echobiometric data [anterior central chamber depth (ACCD), axial length (AL), lens thickness (LT)] and relation between lens thickness and axial length (LT/AL)., Results: One thousand and three hundred and forty-three patients were examined from September 2005 to March 2006; 28 (2.1%) had the diagnosis of APACG. The incidence of the APACG was 20.8 cases per 1000 patients. The patients with APACG were manly white women with a negative familial history of glaucoma and with an average age of 59.6 years. When clinical aspects were compared between eyes with APACG and CLEs, statistical significance was observed: UVA (APACG: 0.27 +/- 0.32; CLE: 0.57 +/- 0.33, p=0.000); CVA (APACG: 0.53 +/- 0.44; CLE: 0.88 +/- 0.23, p=0.000); SE (APACG: +0.49 +/- 1.98; CLE: +1.21 +/- 2.03, p=0.007); C/D (APACG: 0.51 +/- 0.28; CLE: 0.42 +/- 0.20; p=0.031). Also, by gonioscopy, eyes with APACG demonstrated more frequently angle closure than CLEs. The eye of the crisis showed the following characteristics: average K of 45.21 +/- 1.96 D, average CCT of 534.46 +/- 34.15 mm, average ACCD of 2.43 +/- 0.28 mm, average AL of 21.68 +/- 0.96 mm, average LT 4.85 +/- 0.32 mm and average LT/AL of 2.24 +/- 0.16. The CLE presented average K of 44.92 +/- 1.86 D, average CCT of 533.18 +/- 31.41 microm, average ACCD of 2.51 +/- 0.29 mm, average AL of 21.82 +/- 0.92 mm, average LT 4.85 +/- 0.36 mm and average LT/AL of 2.23 +/- 0.18. There were statistically significant differences only in two parameters (K and ACCD) when affected and the CLE were compared., Conclusions: The incidence of the APACG was 20.8/1000. It was more frequent in white women, leu kodermics, without family history of glaucoma and with an age average of 59.6 years. The eyes with APACG showed, with statistical significance, worse visual acuity, higher C/D, lower hypermetropic SE, higher average K, and lower ACCD than CLEs.
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- 2008
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25. [Cardiovascular and pupillary effects of topical ophthalmic 2.5 and 10.0% phenylephrine in healthy volunteers].
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Diniz Filho A, Frasson M, Mérula RV, Morais PR, and Cronemberger S
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- Adolescent, Adult, Blood Pressure drug effects, Female, Humans, Male, Middle Aged, Mydriatics chemistry, Mydriatics pharmacology, Phenylephrine chemistry, Phenylephrine pharmacology, Prospective Studies, Pupil physiology, Statistics, Nonparametric, Time Factors, Heart Rate drug effects, Mydriatics administration & dosage, Phenylephrine administration & dosage, Pupil drug effects
- Abstract
Purpose: To compare the cardiovascular and mydriatic effects of 2.5% and 10.0% phenylephrine., Methods: A case-control, randomized, crossover clinical trial study. We monitored heart rate (HR), blood pressure (BP) and mydriasis in healthy volunteers aged 18-45 years after the instillation of 2.5% and 10.0% phenylephrine in two different occasions., Results: The sample comprised 28 healthy volunteers, 17 male and 11 female, with a mean age of 26.5 years. No changes in heart rate and systolic blood pressure were observed. No significant variation of the mean diastolic blood pressure was found after 1, 5, 10 and 30- minute instillation of 2.5% phenylephrine. However, with 10.0% phenylephrine, there was an increase in mean diastolic blood pressure after five and ten minutes, followed by a drop after 30 minutes, which was not statistically significant. Mydriasis was more marked in both eyes with a statistically significant difference after instillation of 10.0% phenylephrine., Conclusions: The mydriatic effect was greater with 10.0% phenylephrine than with 2.5% phenylephrine and the difference was statistically significant. No statistically significant difference was found in relation to cardiovascular effects in both phenylephrine concentrations.
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- 2007
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26. [Iridociliary cysts on ultrasound biomicroscopic examinations].
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Cronemberger S, Ferreira DM, Diniz Filho A, Mérula RV, and Calixto N
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- Brazil epidemiology, Cysts epidemiology, Female, Humans, Male, Microscopy, Acoustic, Prevalence, Retrospective Studies, Uveal Diseases epidemiology, Ciliary Body diagnostic imaging, Cysts diagnostic imaging, Uveal Diseases diagnostic imaging
- Abstract
Purpose: To present the prevalence of iridociliary cysts in eyes of patients submitted to UBM examination., Methods: We analyzed retrospectively the UBM images of 1157 patients in the period from September 1995 to June 2004. The inclusion criterion was the UBM examination had been made on the four quadrants (superior, inferior, nasal and temporal) of the eyes. The cysts were assessed and classified in relation to their number in each quadrant; localization and morphology. Using the UBM Pro 2000 software we took the measurements of the largest diameter, wall thickness and area of the cysts besides the angle recession area (ARA)., Results: The prevalence of the cysts was 4.9%. No statistical difference was found between the prevalence of cysts regarding gender or between the right and left eyes. They were more prevalent in the inferior (39.8%) and temporal (29.1%) quadrants. The cysts with the largest diameter and area were located in the temporal and superior quadrants. No difference was found in relation to cysts' wall thickness in all quadrants., Conclusions: No statistical difference was found between the prevalence of cysts as concerns gender or between the right and left eyes. However, the cysts were more prevalent in the inferior and temporal quadrants. The locations of the largest cysts are preferentially the temporal and superior quadrants. The angle recession area was smaller in the temporal and superior quadrants. The cysts' wall thickness is practically the same in all quadrants. The diagnosis of iridociliary cysts was an occasional finding in 64.3% of the patients.
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- 2006
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27. [Pellucid marginal degeneration: diagnosis and treatment].
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Mérula RV and Trindade FC
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- Astigmatism therapy, Corneal Diseases complications, Corneal Diseases therapy, Dilatation, Pathologic, Humans, Astigmatism etiology, Corneal Diseases diagnosis, Corneal Topography, Visual Acuity
- Abstract
Pellucid marginal degeneration is characterized by a progressive stromal thinning of the inferior corneal segment, between 4 and 8 o'clock, with a crescentic shape. The area of corneal thinning has a width of about 1 to 2 mm, and it is separated from the corneoscleral limbus by an area of normal corneal tissue. The initial treatment consists of optical correction. However, when the disease progresses to advanced stages, surgical procedures are necessary such as wedge resection, lamellar crescentic resection, penetrating keratoplasty, lamellar keratoplasty, epikeratoplasty and, recently, intracorneal segments.
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- 2006
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28. [Infantile cataract: the importance of early treatment and diagnosis].
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Mérula RV and Fernandes LC
- Subjects
- Adolescent, Age Distribution, Brazil epidemiology, Cataract diagnosis, Cataract epidemiology, Child, Child, Preschool, Female, Humans, Infant, Infant, Newborn, Male, Retrospective Studies, Visual Acuity, Cataract congenital, Cataract Extraction
- Abstract
Purpose: To establish the frequency of infantile cataract in the Low Vision Service of São Geraldo Hospital (HSG-HCUFMG) and to analyze basis of history, ophthalmologic examination and optical prescription in these patients., Methods: Retrospective study of infantile cataract recorded in the Low Vision Service from January/1992 to December/2002. Age, sex, race, age at the first evidence of leukocoria and who noticed it, ages at diagnosis and phacectomy, family history of cataract, intraocular lens implantation, visual acuity (VA) and optic prescription were evaluated., Results: There were 44 patients. The age ranged from 0-15 years: 19 (43.0%) 0-3, 14 (32.0%) 4-10 and 11 (25.0%) from 11-15 years. Twenty-eight (63.6%) were female and 19 (43.2%) leukodermic. The first evidence of leukocoria was observed by the mother in 17 patients (38.6%). Leukocoria was observed in the first 2 months of life in 45.5% of the patients; phacectomy was performed in 43.2% of the patients with more than 1 year of age. Optic prescription was performed in 61.4% of the cases with 9.1% of the patients below 1 year of age. Intraocular lens was implanted in 13.6% and 4 patients (9.1%) had a family history of congenital cataract. In 20.4% VA was lower than 20/400 and secondary glaucoma was observed in 18.2% of the cases. Low vision aids included two glasses and one telescope., Conclusion: More information about congenital cataract should be provided for families and pediatricians, and early surgical treatment, optic correction and treatment of amblyopia should be performed promptly.
- Published
- 2005
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