CATARATA - Santiago Arango Vélez · CATARATA Author: santiago arango. Created Date: 1/12/2011...
Transcript of CATARATA - Santiago Arango Vélez · CATARATA Author: santiago arango. Created Date: 1/12/2011...
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CATARATA
SANTIAGO ARANGO, MD
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ANATOMIA
Cápsula
Epitelio
Corteza
Núcleo
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Cápsula
Anterior: basal
Posterior: adherencia fibras internas
Espesor: niños vs adultos
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Núcleo
Epinúcleo
Núcleo adulto
Núcleo fetal
Núcleo embrionario
Transparente
Verde, Amarillo, Naranja, Café, Blanco
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BIOQUÍMICA
Alpha, Beta, Gama Cristalinas
Metabolismo Aeróbico y Anaeróbico
Sustrato: Glucosa
Humor Acuoso
Síntesis: Lípidos y Proteínas
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FISIOLOGÍA
Epitelio: Transporte activo
Movimiento iones, aminoacidos,
metabolitos
Movimiento de Agua
Sorbitol
Trauma
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MECANISMO FORMACION
CATARATAS
Stress oxidativo
Stress osmótico: via sorbitol
Agregados de proteínas
Cambios protéicos
Metabolismo alterado
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FACTORES DE RIESGO
Mujer
Cigarrillo
Alcohol
Esteroides
Exposición solar
Raza negra
Diabetes Mellitus
Deficiencia proteínas y aminoacidos
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CLASIFICACION
ADULTO: SENIL
Nuclear
Cortical
Subcapsular Posterior
TRAUMATICA
INFLAMATORIA
METABÓLICA
TÓXICA Y NUTRICIONAL
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CATARATA CONGÉNITA
Trisomía 13,15,18
Prematurez
Metabólicas: Paratiroides, Galactosemia
Hipocalcemia
Malformaciones craneofaciales
TORCHS
Desnutrición
Drogas
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SÍNTOMAS
Disminución AV
Aumento Miopía
Visión Borrosa
Diplopia Mono ocular
Destellos luces
Pérdida de la visión
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DIAGNOSTICO
Tomar Agudeza Visual
Oftalmoscopio Directo +10
Retinoscopio
Linterna
Lámpara de Hendidura
Fondo de Ojo
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MANEJO ADULTOS
Observar
Cambio de lentes
Cirugía:
Disminución calidad de vida
AV < 20/40 con corrección
Facoemulsificación
Lente Intraocular
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