RESUMEN
OBJETIVO: Evaluar parámetros morfológicos de papila y capa de fibras nerviosas de la retina (CFNR) explorados con el HRT3 y el GDx-VCC en población normal y analizar correlaciones con variables demográficas. PACIENTES Y MÉTODOS: Estudio observacional transversal en el contexto de una campaña de detección de glaucoma en un centro de atención primaria de Barcelona. Se seleccionaron sujetos caucásicos de ascendencia mediterránea, no hipertensos y con riesgo de glaucoma (≥ 60 años o ≥ 40 años con alguno de los siguientes factores de riesgo: antecedentes familiares de glaucoma o de presión intraocular alta o miopía > 3 dioptrías). Se realizó exploración oftalmológica completa incluyendo tomografía láser confocal (HRT3) y polarimetría láser de barrido (GDX-VCC). Todos los sujetos incluidos presentan las pruebas dentro de la normalidad. Se analizaron parámetros estructurales con edad, refracción y paquimetría mediante el test de Spearman. RESULTADOS: Doscientos veinticuatro sujetos incluidos con una media de edad de 63,4 ± 11,1 años. Áreas de disco, excavación y anillo de 2,14 ± 0,52 mm2; 0,44 ± 0,34 mm2 y 1,69 ± 0,38 mm2, respectivamente. Valor medio de la CFNR (GDX) 55,9 ± 6,9 μm. La edad se correlacionó con menor volumen del anillo, mayor índice de morfología de la excavación, mayor profundidad media y máxima de la excavación y menor índice de fibras nerviosas y CFNR (p < 0,05). CONCLUSIÓN: Se proporcionan valores medios y distribución de numerosos parámetros de la papila y la CFNR en población caucásica normal de ascendencia mediterránea. Se observó una pérdida de espesor de la CFNR, adelgazamiento del anillo y aumento de la excavación con la edad
OBJECTIVE: To evaluate morphological parameters of optic disc and retinal nerve fiber layer (RNFL) examined with confocal laser tomography (HRT3) and laser polarimetry (GDx-VCC) in a normal population, and analyze correlations of these parameters with demographic variables. PATIENTS AND METHODS: Cross-sectional study in the context of a glaucoma screening campaign in the primary care center of Barcelona. The individuals selected were non-hypertensive Mediterranean Caucasians with risk for glaucoma development (individuals ≥ 60 years old or ≥ 40 years old with family history of glaucoma or intraocular pressure or myopia > 3 diopter). All subjects underwent a complete ophthalmic examination, confocal laser tomography (HRT3) and scanning laser polarimetry (GDX-VCC), subjects with results within normal limits only being included. Structural parameters were analyzed along with age, refraction, and pachymetry based on the Spearman rank correlation test. RESULTS: A total of 224 subjects included, with a mean age of 63.4 ± 11.1 years. Disc areas, excavation and ring area were 2.14 ± 0.52 mm2, 0.44 ± 0.34 mm 2 and 1.69 ± 0.38 mm2, respectively. The mean RNFL (GDX) was 55.9 ± 6.9 μm. Age was correlated with lower ring volume, highest rate of cup shape measure, largest mean and maximum cup depth, lower nerve fiber index (NFI) and RNFL (all p-values below .05). CONCLUSION: The mean values and distribution of several parameters of the papilla and the RNFL in normal Mediterranean Caucasians population are presented. A loss of thickness of the RNFL, ring thinning, and enlarged cup was observed with increased age
Asunto(s)
Femenino , Humanos , Masculino , Nervio Óptico/anomalías , Nervio Óptico/citología , Microscopía Confocal/métodos , Polarimetría de Barrido por Laser/métodos , Glaucoma/metabolismo , Glaucoma/patología , Atención Primaria de Salud/métodos , Estadísticas no Paramétricas , Fibras Nerviosas/fisiología , Nervio Óptico/metabolismo , Nervio Óptico/patología , Microscopía Confocal/normas , Polarimetría de Barrido por Laser , España/etnología , Glaucoma/complicaciones , Glaucoma/diagnóstico , Atención Primaria de Salud , Fibras Nerviosas/metabolismo , Estudio ObservacionalRESUMEN
OBJECTIVE: To evaluate morphological parameters of optic disc and retinal nerve fiber layer (RNFL) examined with confocal laser tomography (HRT3) and laser polarimetry (GDx-VCC) in a normal population, and analyze correlations of these parameters with demographic variables. PATIENTS AND METHODS: Cross-sectional study in the context of a glaucoma screening campaign in the primary care center of Barcelona. The individuals selected were non-hypertensive Mediterranean Caucasians with risk for glaucoma development (individuals≥60 years old or≥40 years old with family history of glaucoma or intraocular pressure or myopia>3diopter). All subjects underwent a complete ophthalmic examination, confocal laser tomography (HRT3) and scanning laser polarimetry (GDX-VCC), subjects with results within normal limits only being included. Structural parameters were analyzed along with age, refraction, and pachymetry based on the Spearman rank correlation test. RESULTS: A total of 224 subjects included, with a mean age of 63.4±11.1 years. Disc areas, excavation and ring area were 2.14±0.52mm(2), 0.44±0.34mm (2) and 1.69±0.38mm(2), respectively. The mean RNFL (GDX) was 55.9±6.9µm. Age was correlated with lower ring volume, highest rate of cup shape measure, largest mean and maximum cup depth, lower nerve fiber index (NFI) and RNFL (all p-values below .05). CONCLUSION: The mean values and distribution of several parameters of the papilla and the RNFL in normal Mediterranean Caucasians population are presented. A loss of thickness of the RNFL, ring thinning, and enlarged cup was observed with increased age.