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samenvatting traag progressieve visusdaling tabelvorm $3.66   Add to cart

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samenvatting traag progressieve visusdaling tabelvorm

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les over traag progressieve visusdaling verwerkt in tabel, zonder foto's

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  • June 10, 2024
  • 3
  • 2023/2024
  • Summary
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TRAAG PROGRESSIEVE VISUSDALING
Oorzaken - Refractie afwijkingen
- Cataract
- Netvlies problemen: macula degeneratie, diabetische
retinopathie, erfelijke netvlies aandoeningen
- Hoornvlies aandoeningen
- Compressieve letsels
- Toxiciteit
Hoornvliesaandoeningen
Kromming →focus van het licht
Refractie afwijking: astigmatisme
Keratoconus
Transparantie Dystrofie
➔ Lattice dystrofie
➔ Fuchs dystrofie
Degeneratie
Bulleuze keratopathie
Compressieve letsels optische banen
Symptomen - Hoofdpijn
- Neurologische uitval
- Endocrinologische afwijkingen
Nakijken RAPD → nooit bij cataract, ARMD
GV → bitemporale hemianopsie indicatief voor hypofysetumor
Nervus opticus → atrofie, papiloedeem
Toxiciteit Op het netvlies
- Hydroxychloroquine (Plaquenil)
- Dosis dependent
- Baseline en screening!
Op de n. opticus
- Medicatie: ethambutol
- Tabak alcohol amblyopie
Refractie afwijkingen
Algemeen Slechtziendheid door refractie-afwijking is geen ziekte
Gebruik pinhole om differentiaal diagnose op te stellen tussen
refractie afwijkingen en oogpathologie
➔ Indien probleem: zicht niet beter met pinhole
Pinhole vision = stenopeïsch gaatje
Het emmetrope oog = het normale oog
Lichtstralen van oneindig gefocuseerd op netvlies
Accommodatie is in rust
Brekend vermogen vh oog = 45 dioptrie
➔ 2/3 cornea, 1/3 lens
Accommodatie = mogelijkheid om scherp te zien van dichtbij
Lichtstralen weerkaatst door nabij gelegen voorwerpen zijn
divergent
➔ Meer refractie/breking nodig om ze in focus te brengen
Accomodatievermogen neemt af met de leeftijd
DUS accomodatiemechanisme brengt divergente lichtstralen in
focus op retina

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