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Samenvatting Voorbereiding week 7 klopto 3
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Voorbereiding week 7 klopto 3
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Voorbereiding week 7 klopto 3Spots and dots in de retina
Cotton wool spot -> ophopingen van neuronale organellen (vaak
mitochondria) in gebieden waar lokale ischaemie is. Ze zijn een niet-
specifiek teken van slechte retinale circulatie. De cotton wool spots
veroorzaken geen visusverlies. Bevinden zich in de NFL. Bevinden zich
vaak bij een verstopt bloedvat.
Exsudaten -> een teken van vasculaire lekkage. Zijn oppervlakkig en
vaak scherper begrensd dan drusen. Komt voor bij DM en HTN.
Dot (klein) en Blot (groot) bloedingen -> kenmerkend voor DRP.
Vlamvormige bloedingen -> kenmerkend voor HTN en BRVO. Dit is
visusbedreigend.
Drusen -> afbraakproducten van fotoreceptoren. Een teken van
veroudering van het RPE. Veroorzaken meestal geen visusverlies,
maar de atrofie van het RPE kan dit wel veroorzaken. Zitten tegen RPE
aan.
- Drusen macula
- Drusen papil -> drusen in de papil, uitsluiten papiloedeem
(GV, OCT, pupilreacties)!
- Drusen retina buiten de macula
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