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SICS > Anatomia de la catarata, iris y zonula > Flashcards

Anatomia de la catarata, iris y zonula Flashcards

1
Q

Partes de capsula

A

Capsula anterior
Capsula posterior
Capsula ecuatoriana

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2
Q

Grosor de capsula en sus diferentes puntos

A

Anterior - 14 um
Posterior - 4 um
Ecuador - 21 um

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3
Q

Zonas de capsula que tienen actividad celular

A

Anterior y ecuador

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4
Q

Zona de capsula con mayor actividad celular

A

Ecuador

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5
Q

Comportamiento de ruptura de capsula anterior y posterior

A

Anterior - linear
Posterior - circular

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6
Q

Razon de catarata traumatica

A

Ruptura de capsula
o
Daño de epitelio que genera opacidad

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7
Q

Angulo fisiologico del iris respecto a la cornea

A

5-10°

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8
Q

Celulas que secretan fibras zonulares

A

Epitelio ciliar

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9
Q

Datos que sugieren luxacion o subluxacion lenticular

A

Iridodonesis
Facodonesis

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10
Q

Causas de catarata congenita

A

Infeccion intrauterina
Desnutricion materna
Mutacion genetica

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11
Q

Causas de catarata traumatica

A

Daño directo de celulas epiteliales
Daño de fibras corticales
Deposito de material (p.ej hierro)

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12
Q

Parte del cristalino con mayor predisposicion a proceso degenerativo

A

Posterior

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13
Q

Fisiopatologia de catarata cortical

A

Disrupcion de las fibras corticales maduras, que genera salida de metabolitos de las fibras celulares corticales y depositos minerales

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14
Q

Fisiopatologia de catarata subcapsular posterior

A

Celulas epiteliales anormales en el ecuador que migran a la capsula posterior y se hinchan 5-6 veces su tamaño

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15
Q

Condiciones asociadas a catarata subcapsular posterior

A

Enfermedades inflamatorias
Diabetes
Radiacion ionizante
Esteroides topicos/sistemicos

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16
Q

Que significa iluminacion coaxial

A

Fuente de iluminacion esta a ≤2° del angulo de observacion

17
Q

Fisiopatologia de catarata nuclear

A

Compresion mecanica de capas de corteza sobre el nucleo

SICS (8 decks)

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