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samenvatting cataract tabelvorm $3.64   Add to cart

Summary

samenvatting cataract tabelvorm

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de les over cataract verwerkt in een tabel (zonder foto's)

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  • June 10, 2024
  • 3
  • 2023/2024
  • Summary
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CATARACT
Inleiding
Structuur van de lens 3 lagen
- Kapsel (H2O en voedingsstoffen)
- Cortex
- Nucleus
Specifieke EW
→transparantie
Definitie cataract = opaciteit in de lens
Door aftakeling, EW veranderen van samenstelling → lens
verkleurt
Kenmerken - Geen ziekte!
- Bij >80j 100% incidentie
- Meest voorkomende operatie
- Belangrijkste oz van reversibele blindheid wereldwijd
- Trage visusdaling
Wanneer chirurgie Als cataract verantw is voor visusdaling die interfereert met
levenskwaliteit
Klachten Afhankelijk van uni/bilateraal, graad opaciteit, plaats opaciteit
Visus moeilijkheden → ver/dicht, beter met pinhole!
Verblinding → subcapsularis posterior cataract
Monoculaire diplopie, halo’s rond lichten
Lezen zonder bril → myopisatie, kunnen ineens terug dichtbij zien
Tekenen - Gedaalde gezichtsscherpte
- Verminderde rode reflet
- Verkleuring van de pupil (witte of bruine cataract)
→steeds lichtperceptie met localisatie, steeds normale
pupilreflexen
Oorzaken en RF - Leeftijd
- Diabetes
- Secundair aan inflammatie (uveïtis)
- Trauma
- Steroïden
- Onderdeel van syndroom vb. atopische dermatitis
- Lokale RT
- Aangeboren!!!
Soorten cataract - Leeftijdsgebonden cataract
- Subcapsularis posterior
➔ Corticalis
➔ Nucleair
- Mature cataract → hypermatuur cataract → morgagnian
cataract
- Traumatic cataract (varenblad cataract typisch bij stomp
trauma)
- Cataract bij atopische dermatitis
- Congenitale cataract
Cataract bij kinderen Verlies van rode reflet
Uitsluiten infectieziektes en metabole stoornissen!
Hereditaire vormen, meestal geen oorzaak
Medische urgentie → dense amblyopie

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